**First hazard class (table row):** 1.5

**Second hazard class (table column):** 5.2

**Row description:** Very insensitive explosives

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.

> Segregation Table for Hazardous Materials Class or division | | Notes | 1.1 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.1 | 2.2 | 2.3 gas zone A | 2.3 gas Zone B | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 liquids PG I zone A | 7 | 8 liquids only | Explosives | 1.1 and 1.2 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Explosives | 1.3 | | * | * | * | * | * | X | | X | X | X | | X | X | X | X | X | | X | Explosives | 1.4 | | * | * | * | * | * | O | | O | O | O | | O | | | | O | | O | Very insensitive explosives | 1.5 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Extremely insensitive explosives | 1.6 | | * | * | * | * | * | | | | | | | | | | | | | | Flammable gases | 2.1 | | X | X | O | X | | | | X | O | | | | | | | O | O | | Non-toxic, non-flammable gases | 2.2 | | X | | | X | | | | | | | | | | | | | | | Poisonous gas Zone A | 2.3 | | X | X | O | X | | X | | | | X | X | X | X | X | X | | | X | Poisonous gas Zone B | 2.3 | | X | X | O | X | | O | | | | O | O | O | O | O | O | | | O | Flammable liquids | 3 | | X | X | O | X | | | | X | O | | | | | O | | X | | | Flammable solids | 4.1 | | X | | | X | | | | X | O | | | | | | | X | | O | Spontaneously combustible materials | 4.2 | | X | X | O | X | | | | X | O | | | | | | | X | | X | Dangerous when wet materials | 4.3 | | X | X | | X | | | | X | O | | | | | | | X | | O | Oxidizers | 5.1 | A | X | X | | X | | | | X | O | O | | | | | | X | | O | Organic peroxides | 5.2 | | X | X | | X | | | | X | O | | | | | | | X | | O | Poisonous liquids PG I Zone A | 6.1 | | X | X | O | X | | O | | | | X | X | X | X | X | X | | | X | Radioactive materials | 7 | | X | | | X | | O | | | | | | | | | | | | | Corrosive liquids | 8 | | X | X | O | X | | | | X | O | | O | X | O | O | O | X | | | ( e ) lnstructions for using the segregation table for hazardous materials are as follows: ( 1 ) The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation. ( 3 ) The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur. Notwithstanding the methods of separation employed, Class 8 (corrosive) liquids may not be loaded above or adjacent to Class 4 (flammable) or Class 5 (oxidizing) materials; except that shippers may load truckload shipments of such materials together when it is known that the mixture of contents would not cause a fire or a dangerous evolution of heat or gas. ( 4 ) The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in <https://www.ecfr.gov/current/title-49/section-177.848#p-177.848(f)> paragraph (f) of this section. ( 5 ) The note “A” in the second column of the table means that, notwithstanding the requirements of the letter “X”, ammonium nitrate (UN1942) and ammonium nitrate fertilizer may be loaded or stored with Division 1.1 (explosive) or Division 1.5 materials, unless otherwise prohibited by <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(c)> § 177.835(c) . ( 6 ) When the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table or <https://www.ecfr.gov/current/title-49/section-172.402> § 172.402 of this subchapter requires a package to bear a subsidiary hazard label, segregation appropriate to the subsidiary hazard must be applied when that segregation is more restrictive than that required by the primary hazard. However, hazardous materials of the same class may be stored together without regard to segregation required for any secondary hazard if the materials are not capable of reacting dangerously with each other and causing combustion or dangerous evolution of heat, evolution of flammable, poisonous, or asphyxiant gases, or formation of corrosive or unstable materials.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** 1.5

**Second hazard class (table column):** 6.1 liquids PG I zone A

**Row description:** Very insensitive explosives

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.

> Segregation Table for Hazardous Materials Class or division | | Notes | 1.1 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.1 | 2.2 | 2.3 gas zone A | 2.3 gas Zone B | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 liquids PG I zone A | 7 | 8 liquids only | Explosives | 1.1 and 1.2 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Explosives | 1.3 | | * | * | * | * | * | X | | X | X | X | | X | X | X | X | X | | X | Explosives | 1.4 | | * | * | * | * | * | O | | O | O | O | | O | | | | O | | O | Very insensitive explosives | 1.5 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Extremely insensitive explosives | 1.6 | | * | * | * | * | * | | | | | | | | | | | | | | Flammable gases | 2.1 | | X | X | O | X | | | | X | O | | | | | | | O | O | | Non-toxic, non-flammable gases | 2.2 | | X | | | X | | | | | | | | | | | | | | | Poisonous gas Zone A | 2.3 | | X | X | O | X | | X | | | | X | X | X | X | X | X | | | X | Poisonous gas Zone B | 2.3 | | X | X | O | X | | O | | | | O | O | O | O | O | O | | | O | Flammable liquids | 3 | | X | X | O | X | | | | X | O | | | | | O | | X | | | Flammable solids | 4.1 | | X | | | X | | | | X | O | | | | | | | X | | O | Spontaneously combustible materials | 4.2 | | X | X | O | X | | | | X | O | | | | | | | X | | X | Dangerous when wet materials | 4.3 | | X | X | | X | | | | X | O | | | | | | | X | | O | Oxidizers | 5.1 | A | X | X | | X | | | | X | O | O | | | | | | X | | O | Organic peroxides | 5.2 | | X | X | | X | | | | X | O | | | | | | | X | | O | Poisonous liquids PG I Zone A | 6.1 | | X | X | O | X | | O | | | | X | X | X | X | X | X | | | X | Radioactive materials | 7 | | X | | | X | | O | | | | | | | | | | | | | Corrosive liquids | 8 | | X | X | O | X | | | | X | O | | O | X | O | O | O | X | | | ( e ) lnstructions for using the segregation table for hazardous materials are as follows: ( 1 ) The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation. ( 3 ) The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur. Notwithstanding the methods of separation employed, Class 8 (corrosive) liquids may not be loaded above or adjacent to Class 4 (flammable) or Class 5 (oxidizing) materials; except that shippers may load truckload shipments of such materials together when it is known that the mixture of contents would not cause a fire or a dangerous evolution of heat or gas. ( 4 ) The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in <https://www.ecfr.gov/current/title-49/section-177.848#p-177.848(f)> paragraph (f) of this section. ( 5 ) The note “A” in the second column of the table means that, notwithstanding the requirements of the letter “X”, ammonium nitrate (UN1942) and ammonium nitrate fertilizer may be loaded or stored with Division 1.1 (explosive) or Division 1.5 materials, unless otherwise prohibited by <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(c)> § 177.835(c) . ( 6 ) When the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table or <https://www.ecfr.gov/current/title-49/section-172.402> § 172.402 of this subchapter requires a package to bear a subsidiary hazard label, segregation appropriate to the subsidiary hazard must be applied when that segregation is more restrictive than that required by the primary hazard. However, hazardous materials of the same class may be stored together without regard to segregation required for any secondary hazard if the materials are not capable of reacting dangerously with each other and causing combustion or dangerous evolution of heat, evolution of flammable, poisonous, or asphyxiant gases, or formation of corrosive or unstable materials.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>

1.5 — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** 1.5

**Second hazard class (table column):** 7

**Row description:** Very insensitive explosives

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.

> Segregation Table for Hazardous Materials Class or division | | Notes | 1.1 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.1 | 2.2 | 2.3 gas zone A | 2.3 gas Zone B | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 liquids PG I zone A | 7 | 8 liquids only | Explosives | 1.1 and 1.2 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Explosives | 1.3 | | * | * | * | * | * | X | | X | X | X | | X | X | X | X | X | | X | Explosives | 1.4 | | * | * | * | * | * | O | | O | O | O | | O | | | | O | | O | Very insensitive explosives | 1.5 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Extremely insensitive explosives | 1.6 | | * | * | * | * | * | | | | | | | | | | | | | | Flammable gases | 2.1 | | X | X | O | X | | | | X | O | | | | | | | O | O | | Non-toxic, non-flammable gases | 2.2 | | X | | | X | | | | | | | | | | | | | | | Poisonous gas Zone A | 2.3 | | X | X | O | X | | X | | | | X | X | X | X | X | X | | | X | Poisonous gas Zone B | 2.3 | | X | X | O | X | | O | | | | O | O | O | O | O | O | | | O | Flammable liquids | 3 | | X | X | O | X | | | | X | O | | | | | O | | X | | | Flammable solids | 4.1 | | X | | | X | | | | X | O | | | | | | | X | | O | Spontaneously combustible materials | 4.2 | | X | X | O | X | | | | X | O | | | | | | | X | | X | Dangerous when wet materials | 4.3 | | X | X | | X | | | | X | O | | | | | | | X | | O | Oxidizers | 5.1 | A | X | X | | X | | | | X | O | O | | | | | | X | | O | Organic peroxides | 5.2 | | X | X | | X | | | | X | O | | | | | | | X | | O | Poisonous liquids PG I Zone A | 6.1 | | X | X | O | X | | O | | | | X | X | X | X | X | X | | | X | Radioactive materials | 7 | | X | | | X | | O | | | | | | | | | | | | | Corrosive liquids | 8 | | X | X | O | X | | | | X | O | | O | X | O | O | O | X | | | ( e ) lnstructions for using the segregation table for hazardous materials are as follows: ( 1 ) The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation. ( 3 ) The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur. Notwithstanding the methods of separation employed, Class 8 (corrosive) liquids may not be loaded above or adjacent to Class 4 (flammable) or Class 5 (oxidizing) materials; except that shippers may load truckload shipments of such materials together when it is known that the mixture of contents would not cause a fire or a dangerous evolution of heat or gas. ( 4 ) The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in <https://www.ecfr.gov/current/title-49/section-177.848#p-177.848(f)> paragraph (f) of this section. ( 5 ) The note “A” in the second column of the table means that, notwithstanding the requirements of the letter “X”, ammonium nitrate (UN1942) and ammonium nitrate fertilizer may be loaded or stored with Division 1.1 (explosive) or Division 1.5 materials, unless otherwise prohibited by <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(c)> § 177.835(c) . ( 6 ) When the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table or <https://www.ecfr.gov/current/title-49/section-172.402> § 172.402 of this subchapter requires a package to bear a subsidiary hazard label, segregation appropriate to the subsidiary hazard must be applied when that segregation is more restrictive than that required by the primary hazard. However, hazardous materials of the same class may be stored together without regard to segregation required for any secondary hazard if the materials are not capable of reacting dangerously with each other and causing combustion or dangerous evolution of heat, evolution of flammable, poisonous, or asphyxiant gases, or formation of corrosive or unstable materials.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** 1.5

**Second hazard class (table column):** 8 liquids only

**Row description:** Very insensitive explosives

**Transport mode:** Carriage by Public Highway

**Segregation code:** X

**What the code requires:** The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation.

> Segregation Table for Hazardous Materials Class or division | | Notes | 1.1 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.1 | 2.2 | 2.3 gas zone A | 2.3 gas Zone B | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 liquids PG I zone A | 7 | 8 liquids only | Explosives | 1.1 and 1.2 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Explosives | 1.3 | | * | * | * | * | * | X | | X | X | X | | X | X | X | X | X | | X | Explosives | 1.4 | | * | * | * | * | * | O | | O | O | O | | O | | | | O | | O | Very insensitive explosives | 1.5 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Extremely insensitive explosives | 1.6 | | * | * | * | * | * | | | | | | | | | | | | | | Flammable gases | 2.1 | | X | X | O | X | | | | X | O | | | | | | | O | O | | Non-toxic, non-flammable gases | 2.2 | | X | | | X | | | | | | | | | | | | | | | Poisonous gas Zone A | 2.3 | | X | X | O | X | | X | | | | X | X | X | X | X | X | | | X | Poisonous gas Zone B | 2.3 | | X | X | O | X | | O | | | | O | O | O | O | O | O | | | O | Flammable liquids | 3 | | X | X | O | X | | | | X | O | | | | | O | | X | | | Flammable solids | 4.1 | | X | | | X | | | | X | O | | | | | | | X | | O | Spontaneously combustible materials | 4.2 | | X | X | O | X | | | | X | O | | | | | | | X | | X | Dangerous when wet materials | 4.3 | | X | X | | X | | | | X | O | | | | | | | X | | O | Oxidizers | 5.1 | A | X | X | | X | | | | X | O | O | | | | | | X | | O | Organic peroxides | 5.2 | | X | X | | X | | | | X | O | | | | | | | X | | O | Poisonous liquids PG I Zone A | 6.1 | | X | X | O | X | | O | | | | X | X | X | X | X | X | | | X | Radioactive materials | 7 | | X | | | X | | O | | | | | | | | | | | | | Corrosive liquids | 8 | | X | X | O | X | | | | X | O | | O | X | O | O | O | X | | | ( e ) lnstructions for using the segregation table for hazardous materials are as follows: ( 1 ) The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation. ( 3 ) The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur. Notwithstanding the methods of separation employed, Class 8 (corrosive) liquids may not be loaded above or adjacent to Class 4 (flammable) or Class 5 (oxidizing) materials; except that shippers may load truckload shipments of such materials together when it is known that the mixture of contents would not cause a fire or a dangerous evolution of heat or gas. ( 4 ) The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in <https://www.ecfr.gov/current/title-49/section-177.848#p-177.848(f)> paragraph (f) of this section. ( 5 ) The note “A” in the second column of the table means that, notwithstanding the requirements of the letter “X”, ammonium nitrate (UN1942) and ammonium nitrate fertilizer may be loaded or stored with Division 1.1 (explosive) or Division 1.5 materials, unless otherwise prohibited by <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(c)> § 177.835(c) . ( 6 ) When the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table or <https://www.ecfr.gov/current/title-49/section-172.402> § 172.402 of this subchapter requires a package to bear a subsidiary hazard label, segregation appropriate to the subsidiary hazard must be applied when that segregation is more restrictive than that required by the primary hazard. However, hazardous materials of the same class may be stored together without regard to segregation required for any secondary hazard if the materials are not capable of reacting dangerously with each other and causing combustion or dangerous evolution of heat, evolution of flammable, poisonous, or asphyxiant gases, or formation of corrosive or unstable materials.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** 1.5

**Second hazard class (table column):** ammonium nitrate (UN1942)

**Row description:** Very insensitive explosives

**Transport mode:** Carriage by Public Highway

**Segregation code:** A

**What the code requires:** The note “A” in the second column of the table means that, notwithstanding the requirements of the letter “X”, ammonium nitrate (UN1942) and ammonium nitrate fertilizer may be loaded or stored with Division 1.1 (explosive) or Division 1.5 materials, unless otherwise prohibited by <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(c)> § 177.835(c) .

> Segregation Table for Hazardous Materials Class or division | | Notes | 1.1 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.1 | 2.2 | 2.3 gas zone A | 2.3 gas Zone B | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 liquids PG I zone A | 7 | 8 liquids only | Explosives | 1.1 and 1.2 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Explosives | 1.3 | | * | * | * | * | * | X | | X | X | X | | X | X | X | X | X | | X | Explosives | 1.4 | | * | * | * | * | * | O | | O | O | O | | O | | | | O | | O | Very insensitive explosives | 1.5 | A | * | * | * | * | * | X | X | X | X | X | X | X | X | X | X | X | X | X | Extremely insensitive explosives | 1.6 | | * | * | * | * | * | | | | | | | | | | | | | | Flammable gases | 2.1 | | X | X | O | X | | | | X | O | | | | | | | O | O | | Non-toxic, non-flammable gases | 2.2 | | X | | | X | | | | | | | | | | | | | | | Poisonous gas Zone A | 2.3 | | X | X | O | X | | X | | | | X | X | X | X | X | X | | | X | Poisonous gas Zone B | 2.3 | | X | X | O | X | | O | | | | O | O | O | O | O | O | | | O | Flammable liquids | 3 | | X | X | O | X | | | | X | O | | | | | O | | X | | | Flammable solids | 4.1 | | X | | | X | | | | X | O | | | | | | | X | | O | Spontaneously combustible materials | 4.2 | | X | X | O | X | | | | X | O | | | | | | | X | | X | Dangerous when wet materials | 4.3 | | X | X | | X | | | | X | O | | | | | | | X | | O | Oxidizers | 5.1 | A | X | X | | X | | | | X | O | O | | | | | | X | | O | Organic peroxides | 5.2 | | X | X | | X | | | | X | O | | | | | | | X | | O | Poisonous liquids PG I Zone A | 6.1 | | X | X | O | X | | O | | | | X | X | X | X | X | X | | | X | Radioactive materials | 7 | | X | | | X | | O | | | | | | | | | | | | | Corrosive liquids | 8 | | X | X | O | X | | | | X | O | | O | X | O | O | O | X | | | ( e ) lnstructions for using the segregation table for hazardous materials are as follows: ( 1 ) The absence of any hazard class or division or a blank space in the table indicates that no restrictions apply. ( 2 ) The letter “X” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation. ( 3 ) The letter “O” in the table indicates that these materials may not be loaded, transported, or stored together in the same transport vehicle or storage facility during the course of transportation unless separated in a manner that, in the event of leakage from packages under conditions normally incident to transportation, commingling of hazardous materials would not occur. Notwithstanding the methods of separation employed, Class 8 (corrosive) liquids may not be loaded above or adjacent to Class 4 (flammable) or Class 5 (oxidizing) materials; except that shippers may load truckload shipments of such materials together when it is known that the mixture of contents would not cause a fire or a dangerous evolution of heat or gas. ( 4 ) The “*” in the table indicates that segregation among different Class 1 (explosive) materials is governed by the compatibility table in <https://www.ecfr.gov/current/title-49/section-177.848#p-177.848(f)> paragraph (f) of this section. ( 5 ) The note “A” in the second column of the table means that, notwithstanding the requirements of the letter “X”, ammonium nitrate (UN1942) and ammonium nitrate fertilizer may be loaded or stored with Division 1.1 (explosive) or Division 1.5 materials, unless otherwise prohibited by <https://www.ecfr.gov/current/title-49/section-177.835#p-177.835(c)> § 177.835(c) . ( 6 ) When the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table or <https://www.ecfr.gov/current/title-49/section-172.402> § 172.402 of this subchapter requires a package to bear a subsidiary hazard label, segregation appropriate to the subsidiary hazard must be applied when that segregation is more restrictive than that required by the primary hazard. However, hazardous materials of the same class may be stored together without regard to segregation required for any secondary hazard if the materials are not capable of reacting dangerously with each other and causing combustion or dangerous evolution of heat, evolution of flammable, poisonous, or asphyxiant gases, or formation of corrosive or unstable materials.

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-177/subpart-C/section-177.848>


**First hazard class (table row):** 8

**Second hazard class (table column):** 1.1, 1.2, 1.5

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 4

**What the code requires:** 4—“Separated longitudinally by an intervening complete compartment or hold from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>

8 — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** 8

**Second hazard class (table column):** 1.3

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 2

**What the code requires:** 2—“Separated from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 1.4, 1.6

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 2

**What the code requires:** 2—“Separated from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 2.1

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 1

**What the code requires:** 1—“Away from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 2.2

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** X

**What the code requires:** X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 2.3

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** X

**What the code requires:** X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 3

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** X

**What the code requires:** X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 4.1

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 1

**What the code requires:** 1—“Away from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 4.2

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 1

**What the code requires:** 1—“Away from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 4.3

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 1

**What the code requires:** 1—“Away from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 5.1

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 2

**What the code requires:** 2—“Separated from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 5.2

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 2

**What the code requires:** 2—“Separated from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 6.1

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** X

**What the code requires:** X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 6.2

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 3

**What the code requires:** 3—“Separated by a complete compartment or hold from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 7

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** 2

**What the code requires:** 2—“Separated from.”

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 8

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** X

**What the code requires:** X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 8

**Second hazard class (table column):** 9

**Row description:** Corrosives

**Transport mode:** Carriage by Vessel

**Segregation code:** X

**What the code requires:** X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 1.1, 1.2, 1.5

**Second hazard class (table column):** 1.1, 1.2, 1.5

**Row description:** Explosives

**Transport mode:** Carriage by Vessel

**Segregation code:** (*)

**What the code requires:** *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>

1.1, 1.2, 1.5 — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** 1.3

**Second hazard class (table column):** 1.1, 1.2, 1.5

**Row description:** Explosives

**Transport mode:** Carriage by Vessel

**Segregation code:** (*)

**What the code requires:** *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>

1.3 — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** 1.4, 1.6

**Second hazard class (table column):** 1.1, 1.2, 1.5

**Row description:** Explosives

**Transport mode:** Carriage by Vessel

**Segregation code:** (*)

**What the code requires:** *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>

1.4, 1.6 — Hazmat load segregation — which hazard classes may travel together, highway vs vessel


**First hazard class (table row):** 1.1, 1.2, 1.5

**Second hazard class (table column):** 1.3

**Row description:** Explosives

**Transport mode:** Carriage by Vessel

**Segregation code:** (*)

**What the code requires:** *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 1.3

**Second hazard class (table column):** 1.3

**Row description:** Explosives

**Transport mode:** Carriage by Vessel

**Segregation code:** (*)

**What the code requires:** *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 1.4, 1.6

**Second hazard class (table column):** 1.3

**Row description:** Explosives

**Transport mode:** Carriage by Vessel

**Segregation code:** (*)

**What the code requires:** *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 1.1, 1.2, 1.5

**Second hazard class (table column):** 1.4, 1.6

**Row description:** Explosives

**Transport mode:** Carriage by Vessel

**Segregation code:** (*)

**What the code requires:** *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>


**First hazard class (table row):** 1.3

**Second hazard class (table column):** 1.4, 1.6

**Row description:** Explosives

**Transport mode:** Carriage by Vessel

**Segregation code:** (*)

**What the code requires:** *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1.

> General Segregation Requirements for Hazardous Materials [Segregation must also take account of a single secondary hazard label, as required by <https://www.ecfr.gov/current/title-49/section-176.83#p-176.83(a)(6)> paragraph (a)(6) of this section.] Class | 1.1, 1.2, 1.5 | 1.3 | 1.4, 1.6 | 2.1 | 2.2 | 2.3 | 3 | 4.1 | 4.2 | 4.3 | 5.1 | 5.2 | 6.1 | 6.2 | 7 | 8 | 9 | Explosives, 1.1, 1.2, 1.5 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 4 | 2 | 4 | X | Explosives, 1.3 | (*) | (*) | (*) | 4 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 2 | 4 | 2 | 2 | X | Explosives, 1.4, 1.6 | (*) | (*) | (*) | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 4 | 2 | 2 | X | Flammable gases 2.1 | 4 | 4 | 2 | X | X | X | 2 | 1 | 2 | 2 | 2 | 2 | X | 4 | 2 | 1 | X | Non-toxic, non-flammable gases 2.2 | 2 | 2 | 1 | X | X | X | 1 | X | 1 | X | X | 1 | X | 2 | 1 | X | X | Poisonous gases 2.3 | 2 | 2 | 1 | X | X | X | 2 | X | 2 | X | X | 2 | X | 2 | 1 | X | X | Flammable liquids 3 | 4 | 4 | 2 | 2 | 1 | 2 | X | X | 2 | 2 | 2 | 2 | X | 3 | 2 | X | X | Flammable solids 4.1 | 4 | 3 | 2 | 1 | X | X | X | X | 1 | X | 1 | 2 | X | 3 | 2 | 1 | X | Spontaneously combustible substances 4.2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 1 | X | 1 | 2 | 2 | 1 | 3 | 2 | 1 | X | Substances which are dangerous when wet 4.3 | 4 | 4 | 2 | 2 | X | X | 2 | X | 1 | X | 2 | 2 | X | 2 | 2 | 1 | X | Oxidizing substances 5.1 | 4 | 4 | 2 | 2 | X | X | 2 | 1 | 2 | 2 | X | 2 | 1 | 3 | 1 | 2 | X | Organic peroxides 5.2 | 4 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | X | 1 | 3 | 2 | 2 | X | Poisons 6.1 | 2 | 2 | X | X | X | X | X | X | 1 | X | 1 | 1 | X | 1 | X | X | X | Infectious substances 6.2 | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 1 | X | 3 | 3 | X | Radioactive materials 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | X | 3 | X | 2 | X | Corrosives 8 | 4 | 2 | 2 | 1 | X | X | X | 1 | 1 | 1 | 2 | 2 | X | 3 | 2 | X | X | Miscellaneous dangerous substances 9 | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | Numbers and symbols relate to the following terms as defined in this section: | 1—“Away from.” | 2—“Separated from.” | 3—“Separated by a complete compartment or hold from.” | 4—“Separated longitudinally by an intervening complete compartment or hold from.” | X—The segregation, if any, is shown in the <https://www.ecfr.gov/current/title-49/section-172.101> § 172.101 table. | *—See <https://www.ecfr.gov/current/title-49/part-176/section-176.144> § 176.144 of this part for segregation within Class 1. |

Source: <https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-176/subpart-D/section-176.83>