Records 1,201–1,600 — What can be mailed: USPS hazardous materials, plus item rules for post and couriers

Records 1,201 to 1,600 of 3,068. Each links to its own page, which carries the source URL and the quoted line that states the value.

• Class 9 Miscellaneous (e.g., self-inflating life rafts, lithium batteries and dry ice) · FedExClass 9 Miscellaneous (e.g., self-inflating life rafts, lithium batteries and dry ice)
• Division 1.4 Explosives (e.g., airbags, small arms ammunition and model rocket motors) · FedExDivision 1.4 Explosives (e.g., airbags, small arms ammunition and model rocket motors)
• Microchips, computer chips, microprocessors, central processing units (CPUs) and mobile telephones · FedExMicrochips, computer chips, microprocessors, central processing units (CPUs) and mobile telephones
• One-of-a-kind/irreplaceable articles such as artwork valued between US$250,000 and US$500,000 each and other single items valued at US$250,000 and higher · FedExOne-of-a-kind/irreplaceable articles such as artwork valued between US$250,000 and US$500,000 each and other single items valued at US$250,000 and higher
• Precious metals such as gold, silver and platinum in the form of bullion, coins or ingots · FedExPrecious metals such as gold, silver and platinum in the form of bullion, coins or ingots
• Precious metals such as gold, silver and platinum in the form of scrap, dust, sulfides, residue, industrial preparations such as silver powder and silver termination paste, and jewelry · FedExPrecious metals such as gold, silver and platinum in the form of scrap, dust, sulfides, residue, industrial preparations such as silver powder and silver termination paste, and jew
• Stamps (postage or revenue); vouchers; tokens; tickets of any kind; and credit, debit or cash cards · FedExStamps (postage or revenue); vouchers; tokens; tickets of any kind; and credit, debit or cash cards
• Transportation moves for and on behalf of the U.S. government/Department of Defense contract products or other governmental agencies · FedExTransportation moves for and on behalf of the U.S. government/Department of Defense contract products or other governmental agencies, wherever located, that require specific licens
• Feed and food imports, including oil seeds · International mail to the United Kingdom (UPU list)Feed and Food imports - including oil seeds Imports are controlled by the Food Standard Agency (FSA)
• Ferric arsenate · USPSFerric arsenate 6.1 UN1606 II Prohibited Prohibited
• Ferric arsenite · USPSFerric arsenite 6.1 UN1607 II Prohibited Prohibited
• Ferric chloride, anhydrous · USPSFerric chloride, anhydrous 8 UN1773 III 8A 8A
• Ferric chloride, solution · USPSFerric chloride, solution 8 UN2582 III 8A 8A
• Ferric nitrate · USPSFerric nitrate 5.1 UN1466 III 5A 5A
• Ferrocerium · USPSFerrocerium 4.1 UN1323 II Prohibited 4A
• Ferrosilicon, with 30 percent or more but less than 90 percent silicon · USPSFerrosilicon, with 30 percent or more but less than 90 percent silicon 4.3 UN1408 III Prohibited 4A
• Ferrous arsenate · USPSFerrous arsenate 6.1 UN1608 II Prohibited Prohibited
• Ferrous chloride, solid · USPSFerrous chloride, solid 8 NA1759 II 8A 8A
• Ferrous chloride, solution · USPSFerrous chloride, solution 8 NA1760 II 8A 8A
• Fertilizer ammoniating solution with free ammonia · USPSFertilizer ammoniating solution with free ammonia 2.2 UN1043 n/a 2B 2B
• Fiber, vegetable, dry · USPSFiber, vegetable, dry 4.1 UN3360 III Prohibited Prohibited
• Fibers, animal or Fibers, vegetable burnt, wet or damp · USPSFibers, animal or Fibers, vegetable burnt, wet or damp 4.2 UN1372 III Prohibited Prohibited
• Fibers or Fabrics impregnated with weakly nitrated nitrocellulose, n.o.s. · USPSFibers or Fabrics impregnated with weakly nitrated nitrocellulose, n.o.s. 4.1 UN1353 III Prohibited Prohibited
• Films, nitrocellulose base, gelatine coated (except scrap) · USPSFilms, nitrocellulose base, gelatine coated (except scrap) 4.1 UN1324 III Prohibited Prohibited
• Financial and monetary commodities over certain value thresholds · DHLFinancial and monetary commodities over certain value thresholds, such as activated SIM cards, gift cards, event tickets, lottery tickets, postal orders, vouchers, and unused stamp
• Financial documents (money, banker's drafts, cheques, bonds, securities) · Royal Mail / Parcelforceany financial documents (money, banker's drafts, Cheques, dividends, binds securities etc.) which can be exchanged themselves or with any other document, for money goods or service
• Fine art · FedExFine art • Fine jewelry
• Fine jewelry · FedExFine jewelry
• Fire extinguisher charges, corrosive liquid · USPSFire extinguisher charges, corrosive liquid 8 UN1774 II 8A 8A
• Fire extinguishers containing compressed or liquified gas · USPSFire extinguishers containing compressed or liquified gas 2.2 UN1044 n/a 2C 2C
• Fire extinguishers containing propellant explosives (UN0275, UN0276, UN0323, UN0381) · USPSFire Extinguishers (UN0275, UN0276, UN0323, or UN0381): Fire extinguishers that contain propellant explosives are prohibited from mailing.
• Fire Extinguishers (UN1044) — Division 2.2 nonflammable compressed gas · USPSFire Extinguishers (UN1044): Division 2.2 nonflammable compressed gas. Fire extinguishers that contain nonflammable compressed gas are mailable if they do not contain methyl bromid
• Firearms · USPSEven though unloaded rifles and shotguns are mailable, mailers must comply with applicable regulations.
• Firearms classified as weapons of war (Section 5) and ammunition · Royal Mail / ParcelforceFirearms and their component parts classified as weapons of war (e.g. Section 5 firearms), ammunition of any kind and firearms prohibited under the Firearms Acts l968-l997 may not
• firearms - handguns (including pistols and revolvers) · USPSPistols, revolvers, and other firearms capable of being concealed on a person, including but not limited to, short-barreled shotguns and short-barreled rifles, are categorized as h
• firearms - short-barreled shotgun or rifle · USPSA shotgun with one or more barrels less than 18 inches long or a rifle with one or more barrels less than 16 inches long.
• Firelighters, solid with flammable liquid · USPSFirelighters, solid with flammable liquid 4.1 UN2623 III Prohibited Prohibited
• Fireworks · USPSFireworks 1.1G UN0333 II Prohibited Prohibited
• Fireworks (Division 1.1, 1.2, 1.3, or 1.4) · USPSAll types of fireworks are prohibited from mailing.
• First aid kits · USPSFirst aid kits 9 UN3316 Prohibited 9C
• Fish meal, stabilized or Fish scrap, stabilized · USPSFish meal, stabilized or Fish scrap, stabilized 9 UN2216 III 9C 9C
• Fish meal, unstabilized or Fish scrap, unstabilized · USPSFish meal, unstabilized or Fish scrap, unstabilized 4.2 UN1374 II Prohibited Prohibited
• Flammable liquid, toxic, corrosive, n.o.s. · USPSFlammable liquid, toxic, corrosive, n.o.s. 3 UN3286 I, II Prohibited Prohibited
• Flammable liquids · Royal Mail / Post OfficeFlammable liquids (including petroleum, lighter fluid, certain adhesives, solvent based paints, wood varnish, enamels, acetone and all nail varnish removers) This includes mixtures
• Flammable liquids · Royal Mail Wholesale (Access customers)Any liquid with a closed cup flash point below 60.5° C is prohibited e.g. acetone, benzene, cleaning compounds, gasoline, lighter fuel, paint thinners and removers, petroleum and s
• Flammable liquids, corrosive, n.o.s. · USPS · I, IIFlammable liquids, corrosive, n.o.s. 3 UN2924 I, II Prohibited Prohibited
• Flammable liquids, corrosive, n.o.s. · USPS · IIIFlammable liquids, corrosive, n.o.s. 3 UN2924 III Prohibited 3A
• Flammable liquids (Hazard Class 3) — domestic air · USPSDomestic Mail via Air Transportation: Flammable liquids are prohibited.
• Flammable liquids (Hazard Class 3) — international mail · USPSInternational Mail: Flammable liquids are prohibited.
• Flammable liquids, n.o.s. · USPSFlammable liquids, n.o.s. 3 UN1993 I, II, III Prohibited 3A
• Flammable liquids, toxic, n.o.s. · USPS · I, IIFlammable liquids, toxic, n.o.s. 3 UN1992 I, II Prohibited Prohibited
• Flammable liquids, toxic, n.o.s. · USPS · IIIFlammable liquids, toxic, n.o.s. 3 UN1992 III Prohibited 3A
• Flammable liquids with flashpoint above 20 F — domestic surface · USPSOther flammable liquids may be mailed if they qualify as a Limited Quantity surface material and meet the criteria in Exhibit 343.21
• Flammable liquids with flashpoint at or below 20 F — domestic surface · USPSDomestic Mail via Surface Transportation: Flammable liquids with a flashpoint at or below 20° F (-7° C) are prohibited.
• Flammable Nail Polishes · USPSSome nail polishes may only be sent by ground transportation.
• Flammable or Combustible Paint · USPSFlammable or combustible paint and paint-related items are generally accepted for mailing, provided the material can qualify as a consumer commodity material or ORM-D (for surface
• Flammable solid, corrosive, inorganic, n.o.s. · USPSFlammable solid, corrosive, inorganic, n.o.s. 4.1 UN3180 II, III Prohibited 4A
• Flammable solid, inorganic, n.o.s. · USPSFlammable solid, inorganic, n.o.s. 4.1 UN3178 II, III Prohibited 4A
• Flammable solid, organic, molten, n.o.s. · USPSFlammable solid, organic, molten, n.o.s. 4.1 UN3176 II, III Prohibited 4A
• Flammable solid, oxidizing, n.o.s. · USPSFlammable solid, oxidizing, n.o.s. 4.1 UN3097 II, III Prohibited Prohibited
• Flammable solid, toxic, inorganic, n.o.s. · USPSFlammable solid, toxic, inorganic, n.o.s. 4.1 UN3179 II, III Prohibited 4A
• Flammable solids · Royal Mail / Post OfficeFlammable solids (including magnesium, phosphorous, potassium, sodium, zinc powder, sparklers and fire lighters) Solid materials which are liable to cause fire by friction, absorpt
• Flammable solids · Royal Mail Wholesale (Access customers)Flammable solids Solid materials which are liable to cause fire by friction, absorption of water, spontaneous chemical changes or retained heat from manufacturing or processing, or
• Flammable solids, corrosive, organic, n.o.s. · USPS · IIFlammable solids, corrosive, organic, n.o.s. 4.1 UN2925 II Prohibited Prohibited
• Flammable solids, corrosive, organic, n.o.s. · USPS · IIIFlammable solids, corrosive, organic, n.o.s. 4.1 UN2925 III Prohibited 4A
• Flammable solids (Hazard Class 4) — domestic air · USPSDomestic Mail via Air Transportation: All flammable solids are prohibited.
• Flammable solids (Hazard Class 4) — international mail · USPSInternational Mail: All flammable solids are prohibited.
• Flammable solids, organic, n.o.s. · USPSFlammable solids, organic, n.o.s. 4.1 UN1325 II, III Prohibited 4A
• Flammable solids qualifying as Limited Quantity surface materials · USPSDomestic Mail via Surface Transportation: Flammable solids that qualify as Limited Quantity surface materials are permitted.
• Flammable solids, toxic, organic, n.o.s. · USPS · IIFlammable solids, toxic, organic, n.o.s. 4.1 UN2926 II Prohibited Prohibited
• Flammable solids, toxic, organic, n.o.s. · USPS · IIIFlammable solids, toxic, organic, n.o.s. 4.1 UN2926 III Prohibited 4A
• Flammables with a flash point of 140 degrees Fahrenheit or less · FedExFlammables with a flash point of 140 degrees Fahrenheit or less
• Flares, aerial · USPSFlares, aerial 1.1G UN0420 II Prohibited Prohibited
• Flares, surface · USPSFlares, surface 1.1G UN0418 II Prohibited Prohibited
• Flash powder · USPSFlash powder 1.3G UN0305 II Prohibited Prohibited
• Flowers · FedExFlowers • Fresh foodstuffs
• Fluorine, compressed · USPSFluorine, compressed 2.3 UN1045 n/a Prohibited Prohibited
• Fluoroacetic acid · USPSFluoroacetic acid 6.1 UN2642 I Prohibited Prohibited
• Fluoroanilines · USPSFluoroanilines 6.1 UN2941 III 6A 6A
• Fluorobenzene · USPSFluorobenzene 3 UN2387 II Prohibited 3A
• Fluoroboric acid · USPSFluoroboric acid 8 UN1775 II 8A 8A
• Fluorophosphoric acid anhydrous · USPSFluorophosphoric acid anhydrous 8 UN1776 II Prohibited Prohibited
• Fluorosilicates, n.o.s. · USPSFluorosilicates, n.o.s. 6.1 UN2856 III 6A 6A
• Fluorosilicic acid · USPSFluorosilicic acid 8 UN1778 II Prohibited Prohibited
• Fluorosulfonic acid · USPSFluorosulfonic acid 8 UN1777 I Prohibited Prohibited
• Fluorotoluenes · USPSFluorotoluenes 3 UN2388 II Prohibited 3A
• Food (fish, meat, vegetables and fruit) · Royal Mail / ParcelforceFish, meat, vegetables and fruit may be sent through the post but they should be packed to withstand a journey of up to two days and must be sent by a guaranteed next day service a
• Foodstuffs and soaps in pressurized containers · USPSFoodstuffs and Soaps: These items are mailable if packaged in accordance with Packaging Instruction 2D
• Forbidden materials, see 49 CFR 173.21 · USPSForbidden materials, see 49 CFR 173.21 Forbidden Prohibited Prohibited Prohibited Prohibited
• Formaldehyde, solutions, flammable · USPSFormaldehyde, solutions, flammable 3 UN1198 III Prohibited 3A
• Formaldehyde, solutions, with not less than 25 percent formaldehyde · USPSFormaldehyde, solutions, with not less than 25 percent formaldehyde 8 UN2209 III 8A 8A
• Formic acid · USPSFormic acid 8 UN1779 II 8A 8A
• Formic acid with not less than 5 percent but less than 10 percent acid by mass · USPSFormic acid with not less than 5 percent but less than 10 percent acid by mass 8 UN3412 III 8A 8A
• Fracturing devices, explosives, without detonators for oil wells · USPSFracturing devices, explosives, without detonators for oil wells 1.1D UN0099 II Prohibited Prohibited
• Fraudulent articles (fictitious or reused postage) · Royal Mail / ParcelforceItems bearing fictitious postage stamp or franking machine impression. Any item on which there is a stamp or franking machine impression which has been previously used to pre-pay a
• Fresh foodstuffs · FedExFresh foodstuffs
• Frozen water · Royal Mail / Post OfficeFrozen water (including packs of ice) International – not allowed in the mail UK – not allowed in the mail
• Frozen water · Royal Mail Wholesale (Access customers)Frozen water Including packs of ice.
• Fuel, aviation, turbine engine · USPSFuel, aviation, turbine engine 3 UN1863 I, II, III Prohibited 3A
• Fuel oil (NA1993) · USPSFuel Oil (NA1993): A flammable liquid with a typical flashpoint below 100° F (38° C) is mailable if it qualifies as a Limited Quantity surface material
• Fuel oil (No. 1, 2, 4, 5, or 6) · USPSFuel oil (No. 1, 2, 4, 5, or 6) 3 NA1993 III Prohibited 3A
• Fulminate of mercury (dry) · USPSFulminate of mercury (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Fulminating gold · USPSFulminating gold Forbidden Prohibited Prohibited Prohibited Prohibited
• Fulminating mercury · USPSFulminating mercury Forbidden Prohibited Prohibited Prohibited Prohibited
• Fulminating platinum · USPSFulminating platinum Forbidden Prohibited Prohibited Prohibited Prohibited
• Fulminating silver · USPSFulminating silver Forbidden Prohibited Prohibited Prohibited Prohibited
• Fulminic acid · USPSFulminic acid Forbidden Prohibited Prohibited Prohibited Prohibited
• Fumaryl chloride · USPSFumaryl chloride 8 UN1780 II 8A 8A
• Fuming and spent sulfuric acids (UN1831, UN1832) · USPSFuming and Spent Sulfuric Acids (UN1831, UN1832).
• Furaldehydes · USPSFuraldehydes 6.1 UN1199 II Prohibited Prohibited
• Furan · USPSFuran 3 UN2389 I Prohibited Prohibited
• Furfuryl alcohol · USPSFurfuryl alcohol 6.1 UN2874 III 6A 6A
• Furfurylamine · USPSFurfurylamine 3 UN2526 III Prohibited 3A
• Furs · DHLFurs Hazardous and combustible materials as defined in IATA regulations
• Furs · FedExFurs • Pornography/obscene material
• Fuse, igniter tubular metal clad · USPSFuse, igniter tubular metal clad 1.4G UN0103 II Prohibited Prohibited
• Fuse, non-detonating (instantaneous or quickmatch) · USPSFuse, non-detonating (instantaneous or quickmatch) 1.3G UN0101 II Prohibited Prohibited
• Fuse, safety · USPSFuse, safety 1.4S UN0105 II Prohibited 1B
• Fusee (railway or highway) · USPSFusee (railway or highway) 4.1 NA1325 II Prohibited Prohibited
• Fusel oil · USPSFusel oil 3 UN1201 II, III Prohibited 3A
• Fuses (except safety fuses Division 1.4S) · USPSAll types of fuses (except safety fuses as permitted under 341.22) are prohibited from mailing.
• Fuzes, detonating · USPSFuzes, detonating 1.1B UN0106 II Prohibited Prohibited
• Fuzes, detonating, with protective features · USPSFuzes, detonating, with protective features 1.1D UN0408 II Prohibited Prohibited
• Fuzes, igniting · USPSFuzes, igniting 1.3G UN0316 II Prohibited Prohibited
• Galactsan trinitrate · USPSGalactsan trinitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• Gallium · USPSGallium 8 UN2803 III Prohibited Prohibited
• Gas cartridges (flammable) without a release device, non-refillable · USPSGas cartridges (flammable) without a release device, non-refillable 2.1 UN2037 n/a Prohibited 2A
• Gas identification set · USPSGas identification set 2.3 NA9035 n/a Prohibited Prohibited
• Gas oil or Diesel fuel or Heating oil, light · USPSGas oil or Diesel fuel or Heating oil, light 3 UN1202 III Prohibited 3A
• Gas, refrigerated liquid, flammable, n.o.s. (cryogenic liquid) · USPSGas, refrigerated liquid, flammable, n.o.s. (cryogenic liquid) 2.1 UN3312 n/a Prohibited Prohibited
• Gas, refrigerated liquid, n.o.s. (cryogenic liquid) · USPSGas, refrigerated liquid, n.o.s. (cryogenic liquid) 2.2 UN3158 n/a Prohibited Prohibited
• Gas, refrigerated liquid, oxidizing, n.o.s. (cryogenic liquid) · USPSGas, refrigerated liquid, oxidizing, n.o.s. (cryogenic liquid) 2.2 UN3311 n/a Prohibited Prohibited
• Gas sample, non-pressurized, flammable, n.o.s., not refrigerated liquid · USPSGas sample, non-pressurized, flammable, n.o.s., not refrigerated liquid 2.1 UN3167 n/a Prohibited 2A
• Gas sample, non-pressurized, toxic, flammable, n.o.s., not refrigerated liquid · USPSGas sample, non-pressurized, toxic, flammable, n.o.s., not refrigerated liquid 2.3 UN3168 n/a Prohibited Prohibited
• Gas sample, non-pressurized, toxic, n.o.s., not refrigerated liquid · USPSGas sample, non-pressurized, toxic, n.o.s., not refrigerated liquid 2.3 UN3169 n/a Prohibited Prohibited
• Gases (compressed, liquefied or dissolved under pressure) · Royal Mail Wholesale (Access customers)1. All flammable compressed gases are prohibited e.g. blowlamps; butane; lighters and refills containing flammable liquid or gas; ethane; gas cylinders for camping stoves; hydrogen
• Gases (Hazard Class 2) — international mail · USPSInternational Mail: All gases are prohibited.
• Gases, including flammable, non-flammable, toxic and compressed gases · Royal Mail / Post OfficeGases, including flammable, non-flammable, toxic and compressed gases (including flammable, non-flammable, toxic and compressed gases, new or used and empty gas cylinders, ethane,
• Gasohol gasoline mixed with ethyl alcohol, with not more than 10 percent alcohol · USPSGasohol gasoline mixed with ethyl alcohol, with not more than 10 percent alcohol 3 NA1203 II Prohibited 3A
• Gasoline · USPShese items in the U.S. mail: Air Bags Ammunition Explosives Gasoline Liquid Mercury Marijuana (medical or otherwise); hemp/CBD is allowed, but restricted Domestically Restricted It
• Gasoline (UN1203) · USPS20° F (-7° C) or below are prohibited from mailing. Gasoline (UN1203) is a flammable liquid that normally has a flashpoint of -50° F. Gasoline is nonmailable under any circumstance
• Gems, cut or uncut · FedExGems, cut or uncut
• Germane · USPSGermane 2.3 UN2192 n/a Prohibited Prohibited
• Glues · USPSSome glues may only be sent by ground transportation.
• Glycerol-1,3-dinitrate · USPSGlycerol-1,3-dinitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• Glycerol alpha-monochlorohydrin · USPSGlycerol alpha-monochlorohydrin 6.1 UN2689 III 6A 6A
• Glycerol gluconate trinitrate · USPSGlycerol gluconate trinitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• Glycerol lactate trinitrate · USPSGlycerol lactate trinitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• Glycidaldehyde · USPSGlycidaldehyde 3 UN2622 II Prohibited 3A
• Goods made in foreign prisons · Royal Mail / Post OfficeGoods made in foreign prisons (except those imported for a non-commercial purpose, of a kind not manufactured in the UK, or those in transit) International – not allowed in the mai
• Goods made in foreign prisons · Royal Mail Wholesale (Access customers)Goods made in foreign prisons Except those imported for a non-commercial purpose, of a kind not manufactured in the UK, or those in transit.
• Grenades, hand or rifle, with bursting charge · USPSGrenades, hand or rifle, with bursting charge 1.1D UN0284 II Prohibited Prohibited
• Grenades, practice, hand or rifle · USPSGrenades, practice, hand or rifle 1.3G UN0318 II Prohibited Prohibited
• Guanidine nitrate · USPSGuanidine nitrate 5.1 UN1467 III 5A 5A
• Guanyl nitrosaminoguanylidene hydrazine (dry) · USPSGuanyl nitrosaminoguanylidene hydrazine (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Guanyl nitrosaminoguanyltetrazene (dry) · USPSGuanyl nitrosaminoguanyltetrazene (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Guns for sporting use · Royal Mail / Post OfficeGuns for sporting use International – allowed in the mail, see restrictions and packaging guidelines below: Guns intended for sporting purposes – including Section 1 and Section 2
• Hafnium powder, dry · USPSHafnium powder, dry 4.2 UN2545 I, II, III Prohibited Prohibited
• Hand Sanitizer · USPSIt is prohibited to send these materials by International Mail including APO/FPO/DPO (military) destinations.
• handguns - authorized military and law enforcement · USPShandguns may be mailed by licensed firearm manufacturers, dealers, importers, or authorized agents of federal, state, territory, or district governments, only upon filing the requi
• handguns - between licensed FFL dealers · USPSHandguns may be mailed between licensed firearm manufacturers, dealers, and importers in customary trade shipments, or for repairing or replacing parts.
• handguns - general prohibition · USPSHandguns, and other firearms capable of being concealed on the person, are nonmailable unless mailed between the parties listed in 432
• Hazardous and combustible materials · DHLHazardous and combustible materials as defined in IATA regulations
• Hazardous materials (any, offered for transportation) · US DOT (49 CFR, all modes)Except as otherwise provided in this part, a person may offer a hazardous material for transportation in a packaging or container required by this part only in accordance with the
• Hazardous materials/dangerous goods and radioactive materials · FedExHazardous materials/dangerous goods and radioactive materials
• Hazardous materials designated in the 49 CFR 172.101 Table · US DOT (49 CFR, all modes)hazard class or specifies that the material is forbidden in transportation, and gives the
• Hazardous Materials (HAZMAT) · USPSSome HAZMAT can only be sent by ground transportation—it can’t go on airplanes.
• Hazardous waste, liquid, n.o.s. · USPSHazardous waste, liquid, n.o.s. 9 NA3082 III Prohibited Prohibited
• Hazardous waste, solid, n.o.s. · USPSHazardous waste, solid, n.o.s. 9 NA3077 III Prohibited Prohibited
• Heating oil, light · USPSHeating oil, light 3 UN1202 III Prohibited 3A
• Helium, compressed · USPSHelium, compressed 2.2 UN1046 n/a 2B 2B
• Helium, refrigerated liquid (cyrogenic liquid) · USPSHelium, refrigerated liquid (cyrogenic liquid) 2.2 UN1963 n/a Prohibited Prohibited
• hemp and hemp-based products including CBD · USPSHemp and hemp-based products, including cannabidiol (CBD) with the tetrahydrocannabinol (THC) concentration of such hemp (or its derivatives) not exceeding a 0.3 percent limit are
• Hemp Products (including CBD) · USPSYou cannot send hemp and hemp-derived products to international or military destinations.
• Heptafluoropropane or Refrigerant gas R 227 · USPSHeptafluoropropane or Refrigerant gas R 227 2.2 UN3296 n/a 2B 2B
• Heptanes · USPSHeptanes 3 UN1206 II Prohibited 3A
• Hexachloroacetone · USPSHexachloroacetone 6.1 UN2661 III 6A 6A
• Hexachlorobenzene · USPSHexachlorobenzene 6.1 UN2729 III 6A 6A
• Hexachlorobutadiene · USPSHexachlorobutadiene 6.1 UN2279 III 6A 6A
• Hexachlorocyclopentadiene · USPSHexachlorocyclopentadiene 6.1 UN2646 I Prohibited Prohibited
• Hexachlorophene · USPSHexachlorophene 6.1 UN2875 III 6A 6A
• Hexadecyltrichlorosilane · USPSHexadecyltrichlorosilane 8 UN1781 II Prohibited Prohibited
• Hexadienes · USPSHexadienes 3 UN2458 II Prohibited Prohibited
• Hexaethyl tetraphosphate and compressed gas mixtures · USPSHexaethyl tetraphosphate and compressed gas mixtures 2.3 UN1612 n/a Prohibited Prohibited
• Hexaethyl tetraphosphate, liquid · USPSHexaethyl tetraphosphate, liquid 6.1 UN1611 II Prohibited Prohibited
• Hexaethyl tetraphosphate, solid · USPSHexaethyl tetraphosphate, solid 6.1 UN1611 II Prohibited Prohibited
• Hexafluoroacetone · USPSHexafluoroacetone 2.3 UN2420 n/a Prohibited Prohibited
• Hexafluoroacetone hydrate, liquid · USPSHexafluoroacetone hydrate, liquid 6.1 UN2552 II Prohibited Prohibited
• Hexafluoroacetone hydrate, solid · USPSHexafluoroacetone hydrate, solid 6.1 UN3436 II Prohibited Prohibited
• Hexafluoroethane, compressed or Refrigerant gas R 116 · USPSHexafluoroethane, compressed or Refrigerant gas R 116 2.2 UN2193 n/a 2B 2B
• Hexafluorophosphoric acid · USPSHexafluorophosphoric acid 8 UN1782 II Prohibited Prohibited
• Hexafluoropropylene, compressed or Refrigerant gas R 1216 · USPSHexafluoropropylene, compressed or Refrigerant gas R 1216 2.2 UN1858 n/a 2B 2B
• Hexaldehyde · USPSHexaldehyde 3 UN1207 III Prohibited 3A
• Hexamethylene diisocyanate · USPSHexamethylene diisocyanate 6.1 UN2281 II Prohibited Prohibited
• Hexamethylene triperoxide diamine (dry) · USPSHexamethylene triperoxide diamine (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Hexamethylenediamine, solid · USPSHexamethylenediamine, solid 8 UN2280 III 8A 8A
• Hexamethylenediamine solution · USPS · IIHexamethylenediamine solution 8 UN1783 II Prohibited Prohibited
• Hexamethylenediamine solution · USPS · IIIHexamethylenediamine solution 8 UN1783 III 8A 8A
• Hexamethyleneimine · USPSHexamethyleneimine 3 UN2493 II Prohibited Prohibited
• Hexamethylenetetramine · USPSHexamethylenetetramine 4.1 UN1328 III Prohibited 4A
• Hexamethylol benzene hexanitrate · USPSHexamethylol benzene hexanitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• Hexanes · USPSHexanes 3 UN1208 II Prohibited 3A
• Hexanitroazoxy benzene · USPSHexanitroazoxy benzene Forbidden Prohibited Prohibited Prohibited Prohibited
• Hexanitrodiphenyl urea · USPSHexanitrodiphenyl urea Forbidden Prohibited Prohibited Prohibited Prohibited
• Hexanitrodiphenylamine or Dipicrylamine or Hexyl · USPSHexanitrodiphenylamine or Dipicrylamine or Hexyl 1.1D UN0079 II Prohibited Prohibited
• Hexanitroethane · USPSHexanitroethane Forbidden Prohibited Prohibited Prohibited Prohibited
• Hexanitrooxanilide · USPSHexanitrooxanilide Forbidden Prohibited Prohibited Prohibited Prohibited
• Hexanitrostilbene · USPSHexanitrostilbene 1.1D UN0392 II Prohibited Prohibited
• Hexanols · USPSHexanols 3 UN2282 III Prohibited 3A
• Hexolite, or Hexotol dry or wetted with less than 15 percent water, by mass · USPSHexolite, or Hexotol dry or wetted with less than 15 percent water, by mass 1.1D UN0118 II Prohibited Prohibited
• Hexotonal · USPSHexotonal 1.1D UN0393 II Prohibited Prohibited
• Hexyltrichlorosilane · USPSHexyltrichlorosilane 8 UN1784 II Prohibited Prohibited
• honeybees · USPSHoneybees: Acceptable to mail only via surface transportation (except for queen honeybees; refer to b.). Mailpieces must be plainly marked on the address side with "Live Bees" and
• Household goods and personal effects · FedExHousehold goods and personal effects
• Hoverboards (self-balancing, mono-wheel, stand-up, unicycle or electric skateboards) · Royal Mail / ParcelforceHoverboards (including any type of rechargeable battery-powered: self-balancing, mono-wheel, stand-up, unicycle or electric skateboard
• Human and animal drugs (other than antibiotics) · International mail to the United States (UPU list)Human and Animal Drugs (other than Antibiotics) Human Drugs; Animal Drugs
• Human and animal remains · Royal Mail Wholesale (Access customers)Human and animal remains Including ashes.
• Human or animal ashes · Royal Mail / ParcelforceHuman or animal ashes can only be sent using a Royal Mail service and must not exceed 50g in weight. These items are prohibited by Parcelforce Worldwide.
• Human or animal ashes · Royal Mail / Post OfficeHuman or animal ashes UK & International – allowed in the mail, see restrictions and packaging guidelines below: Volume per item must not exceed 50g Ashes must be placed in a sift-
• Human or animal samples · Royal Mail / ParcelforcePackaging Guidelines: the total sample volume/mass in any parcel must not exceed 1kg. Solids only can be sent. All human or animal samples must be posted in packaging that complies
• Human remains · FedExHuman remains
• Human remains, fetal remains, human body parts, human embryos · UPSHuman remains, fetal remains, human body parts, human embryos, or compo- nents thereof;
• Human remains or ashes · DHLHuman remains or ashes in any form
• Hunting trophies · DHLHunting trophies, animal parts such as ivory and shark fin, animal remains, or animal by-products or derived products not intended for human consumption where movement is prohibite
• Hunting trophies and animal skins not intended for human consumption · DHLHunting trophies and animal skins not intended for human consumption that fall within certain CITES categories
• Hydrazine aqueous solution, flammable with more than 37 percent hydrazine, by mass · USPSHydrazine aqueous solution, flammable with more than 37 percent hydrazine, by mass 8 UN3484 I Prohibited Prohibited
• Hydrazine aqueous solution, with more than 37 percent hydrazine, by mass · USPSHydrazine aqueous solution, with more than 37 percent hydrazine, by mass 8 UN2030 II Prohibited Prohibited
• Hydrazine, aqueous solution with not more than 37 percent hydrazine, by mass · USPSHydrazine, aqueous solution with not more than 37 percent hydrazine, by mass 6.1 UN3293 III 6A 6A
• Hydrazine azide · USPSHydrazine azide Forbidden Prohibited Prohibited Prohibited Prohibited
• Hydrazine chlorate · USPSHydrazine chlorate Forbidden Prohibited Prohibited Prohibited Prohibited
• Hydrazine decarbonic acid diazide · USPSHydrazine decarbonic acid diazide Forbidden Prohibited Prohibited Prohibited Prohibited
• Hydrazine perchlorate · USPSHydrazine perchlorate Forbidden Prohibited Prohibited Prohibited Prohibited
• Hydrazine selenate · USPSHydrazine selenate Forbidden Prohibited Prohibited Prohibited Prohibited
• Hydriodic acid · USPSHydriodic acid 8 UN1787 II, III 8A 8A
• Hydrobromic acid, with more than 49 percent hydrobromic acid · USPSHydrobromic acid, with more than 49 percent hydrobromic acid 8 UN1788 II, III Prohibited Prohibited
• Hydrobromic acid, with not more than 49 percent hydrobromic acid · USPSHydrobromic acid, with not more than 49 percent hydrobromic acid 8 UN1788 II, III 8A 8A
• Hydrocarbon gas mixture, compressed, n.o.s. · USPSHydrocarbon gas mixture, compressed, n.o.s. 2.1 UN1964 n/a Prohibited 2A
• Hydrocarbon gas mixtures, liquified, n.o.s. · USPSHydrocarbon gas mixtures, liquified, n.o.s. 2.1 UN1965 n/a Prohibited 2A
• Hydrocarbons, liquid, n.o.s. · USPSHydrocarbons, liquid, n.o.s. 3 UN3295 I, II, III Prohibited 3A
• Hydrochloric acid · USPSHydrochloric acid 8 UN1789 II, III 8A 8A
• Hydrochloric acid (UN1789) · USPSHydrochloric Acid (UN1789): Acceptable only in solutions not exceeding 10 percent acid that qualify as Limited Quantity air or Limited Quantity surface material.
• Hydrocyanic acid, aqueous solutions with less than 5 percent hydrogen cyanide · USPSHydrocyanic acid, aqueous solutions with less than 5 percent hydrogen cyanide 6.1 NA1613 II Prohibited Prohibited
• Hydrocyanic acid (prussic) unstabilized · USPSHydrocyanic acid (prussic) unstabilized Forbidden Prohibited Prohibited Prohibited Prohibited
• Hydrofluoric acid and Sulfuric acid mixtures · USPSHydrofluoric acid and Sulfuric acid mixtures 8 UN1786 I Prohibited Prohibited
• Hydrofluoric acid (UN1790) · USPSHydrofluoric Acid (UN1790).
• Hydrofluoric acid, with more than 60 percent strength · USPSHydrofluoric acid, with more than 60 percent strength 8 UN1790 I Prohibited Prohibited
• Hydrofluoric acid, with not more than 60 percent strength · USPSHydrofluoric acid, with not more than 60 percent strength 8 UN1790 II Prohibited Prohibited
• Hydrogen and Methane mixtures, compressed · USPSHydrogen and Methane mixtures, compressed 2.1 UN2034 n/a Prohibited 2A
• Hydrogen bromide, anhydrous · USPSHydrogen bromide, anhydrous 2.3 UN1048 n/a Prohibited Prohibited
• Hydrogen chloride, anhydrous · USPSHydrogen chloride, anhydrous 2.3 UN1050 n/a Prohibited Prohibited
• Hydrogen chloride, refrigerated liquid · USPSHydrogen chloride, refrigerated liquid 2.3 UN2186 n/a Prohibited Prohibited
• Hydrogen, compressed · USPSHydrogen, compressed 2.1 UN1049 n/a Prohibited 2A
• Hydrogen cyanide, stabilized with less than 3 percent water · USPSHydrogen cyanide, stabilized with less than 3 percent water 6.1 UN1051 I Prohibited Prohibited
• Hydrogen fluoride, anhydrous · USPSHydrogen fluoride, anhydrous 8 UN1052 I Prohibited Prohibited
• Hydrogen iodide, anhydrous · USPSHydrogen iodide, anhydrous 2.3 UN2197 n/a Prohibited Prohibited
• Hydrogen peroxide solution (8% or less) · USPSHydrogen Peroxide . Division 5.1 hydrogen peroxide solutions with an 8 percent or less hydrogen peroxide content is regulated as hazardous material but must be prepared according t
• Hydrogen peroxide solution (more than 8% but no more than 20%) · USPSSolutions of hydrogen peroxide more than 8 percent but no more than 20 percent are permitted if they can qualify as Limited Quantity air or Limited Quantity surface.
• Hydrogen peroxide solution (more than 20%) · USPSHydrogen peroxide solution (more than 20 percent).
• Hydrogen, refrigerated liquid (cryogenic liquid) · USPSHydrogen, refrigerated liquid (cryogenic liquid) 2.1 UN1966 n/a Prohibited Prohibited
• Hydrogen selenide, anhydrous · USPSHydrogen selenide, anhydrous 2.3 UN2202 n/a Prohibited Prohibited
• Hydrogen sulfide · USPSHydrogen sulfide 2.3 UN1053 n/a Prohibited Prohibited
• Hydrogendifluoride solutions, n.o.s. · USPS · IIHydrogendifluoride solutions, n.o.s. 8 UN3471 II Prohibited Prohibited
• Hydrogendifluoride solutions, n.o.s. · USPS · IIIHydrogendifluoride solutions, n.o.s. 8 UN3471 III Prohibited 8A
• Hydrogendifluorides, n.o.s. solid · USPS · IIHydrogendifluorides, n.o.s. solid 8 UN1740 II Prohibited Prohibited
• Hydrogendifluorides, n.o.s. solid · USPS · IIIHydrogendifluorides, n.o.s. solid 8 UN1740 III 8A 8A
• Hydrogendifluorides, n.o.s. solutions · USPS · IIHydrogendifluorides, n.o.s. solutions 8 UN3471 II Prohibited Prohibited
• Hydrogendifluorides, n.o.s. solutions · USPS · IIIHydrogendifluorides, n.o.s. solutions 8 UN3471 III 8A 8A
• Hydroxyl amine iodide · USPSHydroxyl amine iodide Forbidden Prohibited Prohibited Prohibited Prohibited
• Hydroxylamine sulfate · USPSHydroxylamine sulfate 8 UN2865 III 8A 8A
• Hypochlorite solutions · USPSHypochlorite solutions 8 UN1791 II, III 8A 8A
• Hypochlorites, inorganic, n.o.s. · USPSHypochlorites, inorganic, n.o.s. 5.1 UN3212 II 5A 5A
• Hyponitrous acid · USPSHyponitrous acid Forbidden Prohibited Prohibited Prohibited Prohibited
• Arsenic compounds, liquid, n.o.s. inorganic, including arsenates, n.o.s.; arsenites, n.o.s.; arsenic sulfides, n.o.s.; and organic compounds of arsenic, n.o.s. · USPS · I, IIArsenic compounds, liquid, n.o.s. inorganic, including arsenates, n.o.s.; arsenites, n.o.s.; arsenic sulfides, n.o.s.; and organic compounds of arsenic, n.o.s. 6.1 UN1556 I, II Pro
• Arsenic compounds, solid, n.o.s. inorganic, including arsenates, n.o.s.; arsenites, n.o.s.; arsenic sulfides, n.o.s.; and organic compounds of arsenic, n.o.s. · USPS · I, IIArsenic compounds, solid, n.o.s. inorganic, including arsenates, n.o.s.; arsenites, n.o.s.; arsenic sulfides, n.o.s.; and organic compounds of arsenic, n.o.s. 6.1 UN1557 I, II Proh
• Coumarin derivative pesticides, liquid, toxic, flammable, flashpoint not less than 23° C · USPS · I, IICoumarin derivative pesticides, liquid, toxic, flammable, flashpoint not less than 23° C 6.1 UN3025 I, II Prohibited Prohibited
• Paint, flammable, corrosive (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base) · USPS · I, IIPaint, flammable, corrosive (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base) 3 UN3469 I, II Prohibited Prohibited
• Paint related material, flammable, corrosive (includingpaint thinningor reducing compound) · USPS · I, IIPaint related material, flammable, corrosive (includingpaint thinningor reducing compound) 3 UN3469 I, II Prohibited Prohibited
• Substituted nitrophenol pesticides, liquid, toxic flammable flashpoint not less than 23° C · USPS · I, IISubstituted nitrophenol pesticides, liquid, toxic flammable flashpoint not less than 23° C 6.1 UN3013 I, II Prohibited Prohibited
• Trimethylamine, aqueous solutions with not more than 50 percent trimethylamine by mass · USPS · I, IITrimethylamine, aqueous solutions with not more than 50 percent trimethylamine by mass 3 UN1297 I, II Prohibited Prohibited
• Phenoxyacetic acid derivative pesticide, liquid, toxic, flammable, flashpoint not less than 23° C · USPS · IPhenoxyacetic acid derivative pesticide, liquid, toxic, flammable, flashpoint not less than 23° C 6.1 UN3347 I Prohibited Prohibited
• Igniters · USPSIgniters 1.1G UN0121 II Prohibited Prohibited
• Phenoxyacetic acid derivative pesticide, liquid, toxic, flammable, flashpoint not less than 23° C · USPS · II, IIIPhenoxyacetic acid derivative pesticide, liquid, toxic, flammable, flashpoint not less than 23° C 6.1 UN3347 II, III 6A 6A
• Isocyanates, toxic, n.o.s. or Isocyanate solutions, toxic, n.o.s. flashpoint more than 61° C and boiling point less than 300° C · USPS · IIIsocyanates, toxic, n.o.s. or Isocyanate solutions, toxic, n.o.s. flashpoint more than 61° C and boiling point less than 300° C 6.1 UN2206 II Prohibited Prohibited
• Mercaptans, liquid, flammable, toxic, n.o.s. or Mercaptan mixtures, liquid, flammable, toxic, n.o.s. · USPS · IIMercaptans, liquid, flammable, toxic, n.o.s. or Mercaptan mixtures, liquid, flammable, toxic, n.o.s. 3 UN1228 II Prohibited Prohibited
• Arsenic compounds, liquid, n.o.s. inorganic, including arsenates, n.o.s.; arsenites, n.o.s.; arsenic sulfides, n.o.s.; and organic compounds of arsenic, n.o.s. · USPS · IIIArsenic compounds, liquid, n.o.s. inorganic, including arsenates, n.o.s.; arsenites, n.o.s.; arsenic sulfides, n.o.s.; and organic compounds of arsenic, n.o.s. 6.1 UN1556 III 6A 6A
• Arsenic compounds, solid, n.o.s. inorganic, including arsenates, n.o.s.; arsenites, n.o.s.; arsenic sulfides, n.o.s.; and organic compounds of arsenic, n.o.s. · USPS · IIIArsenic compounds, solid, n.o.s. inorganic, including arsenates, n.o.s.; arsenites, n.o.s.; arsenic sulfides, n.o.s.; and organic compounds of arsenic, n.o.s. 6.1 UN1557 III 6A 6A
• Coumarin derivative pesticides, liquid, toxic, flammable, flashpoint not less than 23° C · USPS · IIICoumarin derivative pesticides, liquid, toxic, flammable, flashpoint not less than 23° C 6.1 UN3025 III 6A 6A
• Isocyanates, toxic, n.o.s. or Isocyanate solutions, toxic, n.o.s. flashpoint more than 61° C and boiling point less than 300° C · USPS · IIIIsocyanates, toxic, n.o.s. or Isocyanate solutions, toxic, n.o.s. flashpoint more than 61° C and boiling point less than 300° C 6.1 UN2206 III 6A 6A
• Mercaptans, liquid, flammable, toxic, n.o.s. or Mercaptan mixtures, liquid, flammable, toxic, n.o.s. · USPS · IIIMercaptans, liquid, flammable, toxic, n.o.s. or Mercaptan mixtures, liquid, flammable, toxic, n.o.s. 3 UN1228 III Prohibited 3A
• Paint, flammable, corrosive (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base) · USPS · IIIPaint, flammable, corrosive (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base) 3 UN3469 III Prohibited 3A
• Paint related material, flammable, corrosive (includingpaint thinningor reducing compound) · USPS · IIIPaint related material, flammable, corrosive (includingpaint thinningor reducing compound) 3 UN3469 III Prohibited 3A
• Substituted nitrophenol pesticides, liquid, toxic flammable flashpoint not less than 23° C · USPS · IIISubstituted nitrophenol pesticides, liquid, toxic flammable flashpoint not less than 23° C 6.1 UN3013 III 6A 6A
• Trimethylamine, aqueous solutions with not more than 50 percent trimethylamine by mass · USPS · IIITrimethylamine, aqueous solutions with not more than 50 percent trimethylamine by mass 3 UN1297 III Prohibited 3A
• Illegal goods · DHLIllegal goods, including illicit drugs such as narcotics, stimulants, depressants, hallucinogens, cannabis, or cannabis derivatives
• Indecent, obscene or offensive articles · Royal Mail / ParcelforceIndecent or obscene communications, prints, photographs, books or other articles, and parcels bearing grossly offensive, indecent or obscene words, marks or designs are prohibited.
• Infectious substances, affecting animals only · USPSInfectious substances, affecting animals only 6.2 UN2900 n/a Prohibited Prohibited
• Infectious substances, affecting humans only · USPSInfectious substances, affecting humans only 6.2 UN2814 n/a Prohibited Prohibited
• Infectious substances UN2814 or UN2900 (Category A) · Royal Mail Wholesale (Access customers)Category A Infectious Substances are prohibited e.g. Ebola, Anthrax, Foot and Mouth disease as detailed in the latest edition of the International Civil Aviation Organization’s (IC
• Initiating explosives (dry) · USPSInitiating explosives (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Inks (flammable or combustible liquid) · USPSInks: Classified as flammable or combustible liquids. Defined as colored liquids used for writing, drawing, and printing, and often composed of pigments such as carbon black suspen
• Inosital hexanitrate (dry) · USPSInosital hexanitrate (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Insecticide gases, flammable, n.o.s · USPSInsecticide gases, flammable, n.o.s 2.1 UN3354 n/a Prohibited 2A
• Insecticide gases, n.o.s. · USPSInsecticide gases, n.o.s. 2.2 UN1968 n/a 2B 2B
• Insecticide gases, toxic, flammable, n.o.s., Inhalation hazard A, B, C or D · USPSInsecticide gases, toxic, flammable, n.o.s., Inhalation hazard A, B, C or D 2.3 UN3355 n/a Prohibited Prohibited
• Insecticide gases, toxic, n.o.s. · USPSInsecticide gases, toxic, n.o.s. 2.3 UN1967 n/a Prohibited Prohibited
• Cultural artifacts (pre-Columbian sculpture, archaeological and ecclesiastic objects) · International mail to the United States (UPU list)Importation of items such as those listed above is permitted only when an export permit issued by the country of origin where such items were first found accompanies them.
• Electronic Nicotine Delivery Systems (e-cigarettes, vape pens, parts, liquids and accessories) · International mail to the United States (UPU list)Electronic Nicotine Delivery Systems are defined as any electronic device that, through an aerosolized solution, delivers nicotine, flavor, or any other substance to the user inhal
• intoxicating liquors · USPSbeverages with an alcohol content of 0.5 percent or more by weight and are taxable per Chapter 51 of the United States (U.S.) Internal Revenue Service (IRS) Code
• intoxicating liquors - denatured flammable or combustible · USPSif denaturing agents are used, such as sodium bisulfate (a corrosive) or mercuric chloride (a poison), the substances must meet the mailability requirements for Class 8 corrosive m
• intoxicating liquors - exempt federal/state agency mailings · USPSIntoxicating liquor is exempt from the prohibition and may be mailed between federal or state agency employees for official use (e.g., for testing purposes).
• intoxicating liquors - products not categorized as taxable alcoholic beverages · USPSExamples of these mailable products include cold remedies, cooking wine, and mouthwash.
• Inulin trinitrate (dry) · USPSInulin trinitrate (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Iodine · USPSIodine 8 UN3495 III Prohibited Prohibited
• Iodine azide (dry) · USPSIodine azide (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Iodine monochloride, liquid · USPSIodine monochloride, liquid 8 UN3498 II Prohibited Prohibited
• Iodine monochloride, solid · USPSIodine monochloride, solid 8 UN1792 II Prohibited Prohibited
• Iodine pentafluoride · USPSIodine pentafluoride 5.1 UN2495 I Prohibited Prohibited
• Iodomethylpropanes · USPSIodomethylpropanes 3 UN2391 II Prohibited 3A
• Iodopropanes · USPSIodopropanes 3 UN2392 III Prohibited 3A
• Iodoxy compounds (dry) · USPSIodoxy compounds (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Iridium nitratopentamine iridium nitrate · USPSIridium nitratopentamine iridium nitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• Iron oxide, spent, or Iron sponge, spent obtained from coal gas purification · USPSIron oxide, spent, or Iron sponge, spent obtained from coal gas purification 4.2 UN1376 III Prohibited Prohibited
• Iron pentacarbonyl · USPSIron pentacarbonyl 6.1 UN1994 I Prohibited Prohibited
• Irritating materials — all types · USPSIrritating Materials: All irritating materials are nonmailable.
• Isobutane see also Petroleum gases, liquified · USPSIsobutane see also Petroleum gases, liquified 2.1 UN1969 n/a Prohibited 2A
• Isobutanol or Isobutyl alcohol · USPSIsobutanol or Isobutyl alcohol 3 UN1212 III Prohibited 3A
• Isobutyl acetate · USPSIsobutyl acetate 3 UN1213 II Prohibited 3A
• Isobutyl acrylate, stabilized · USPSIsobutyl acrylate, stabilized 3 UN2527 III Prohibited 3A
• Isobutyl formate · USPSIsobutyl formate 3 UN2393 II Prohibited 3A
• Isobutyl isobutyrate · USPSIsobutyl isobutyrate 3 UN2528 III Prohibited 3A
• Isobutyl isocyanate · USPSIsobutyl isocyanate 3 UN2486 I Prohibited Prohibited
• Isobutyl methacrylate, stabilized · USPSIsobutyl methacrylate, stabilized 3 UN2283 III Prohibited 3A
• Isobutyl propionate · USPSIsobutyl propionate 3 UN2394 III Prohibited 3A
• Isobutylamine · USPSIsobutylamine 3 UN1214 II Prohibited Prohibited
• Isobutylene see also Petroleum gases, liquified · USPSIsobutylene see also Petroleum gases, liquified 2.1 UN1055 n/a Prohibited 2A
• Isobutyraldehyde or Isobutyl aldehyde · USPSIsobutyraldehyde or Isobutyl aldehyde 3 UN2045 II Prohibited 3A
• Isobutyric acid · USPSIsobutyric acid 3 UN2529 III Prohibited 3A
• Isobutyronitrile · USPSIsobutyronitrile 3 UN2284 II Prohibited Prohibited
• Isobutyryl chloride · USPSIsobutyryl chloride 3 UN2395 II Prohibited Prohibited
• Isocyanatobenzotrifluorides · USPSIsocyanatobenzotrifluorides 6.1 UN2285 II Prohibited Prohibited
• Isoheptenes · USPSIsoheptenes 3 UN2287 II Prohibited 3A
• Isohexenes · USPSIsohexenes 3 UN2288 II Prohibited 3A
• Isooctenes · USPSIsooctenes 3 UN1216 II Prohibited 3A
• Isopentenes · USPSIsopentenes 3 UN2371 I Prohibited 3A
• Isophorone diisocyanate · USPSIsophorone diisocyanate 6.1 UN2290 III 6A 6A
• Isophoronediamine · USPSIsophoronediamine 8 UN2289 III 8A 8A
• Isoprene, stabilized · USPSIsoprene, stabilized 3 UN1218 I Prohibited 3A
• Isopropanol or Isopropyl alcohol · USPSIsopropanol or Isopropyl alcohol 3 UN1219 II Prohibited 3A
• Isopropenyl acetate · USPSIsopropenyl acetate 3 UN2403 II Prohibited 3A
• Isopropenylbenzene · USPSIsopropenylbenzene 3 UN2303 III Prohibited 3A
• Isopropyl 2-chloropropionate · USPSIsopropyl 2-chloropropionate 3 UN2934 III Prohibited 3A
• Isopropyl acetate · USPSIsopropyl acetate 3 UN1220 II Prohibited 3A
• Isopropyl acid phosphate · USPSIsopropyl acid phosphate 8 UN1793 III 8A 8A
• Isopropyl butyrate · USPSIsopropyl butyrate 3 UN2405 III Prohibited 3A
• Isopropyl chloroacetate · USPSIsopropyl chloroacetate 3 UN2947 III Prohibited 3A
• Isopropyl chloroformate · USPSIsopropyl chloroformate 6.1 UN2407 I Prohibited Prohibited
• Isopropyl isobutyrate · USPSIsopropyl isobutyrate 3 UN2406 II Prohibited 3A
• Isopropyl isocyanate · USPSIsopropyl isocyanate 3 UN2483 I Prohibited 3A
• Isopropyl nitrate · USPSIsopropyl nitrate 3 UN1222 II Prohibited 3A
• Isopropyl propionate · USPSIsopropyl propionate 3 UN2409 II Prohibited 3A
• Isopropylamine 3 UN1221 I Isopropylbenzene · USPSIsopropylamine 3 UN1221 I Isopropylbenzene 3 UN1918 III Prohibited 3A
• Isopropylcumyl hydroperoxide, with more than 72 percent in solution · USPSIsopropylcumyl hydroperoxide, with more than 72 percent in solution Forbidden Prohibited Prohibited Prohibited Prohibited
• Isosorbide5mononitrate · USPSIsosorbide5mononitrate 4.1 UN3251 III Prohibited 3A
• Isothiocyanic acid · USPSIsothiocyanic acid Forbidden Prohibited Prohibited Prohibited Prohibited
• Jet, perforating guns, charged oil well, with detonator · USPSJet, perforating guns, charged oil well, with detonator 1.1D NA0124 II Prohibited Prohibited
• Jet, perforating guns, charged oil well, without detonator · USPSJet, perforating guns, charged oil well, without detonator 1.1D UN0124 II Prohibited Prohibited
• Jewelry and watches over certain value thresholds · DHLJewelry and watches over certain value thresholds
• Jewelry, precious metals, and stones · DHLJewelry, precious metals, and stones
• Kerosene · USPSKerosene 3 UN1223 III Prohibited 3A
• Ketones, liquid, n.o.s. · USPS · IKetones, liquid, n.o.s. 3 UN1224 I Prohibited Prohibited
• Ketones, liquid, n.o.s. · USPS · II, IIIKetones, liquid, n.o.s. 3 UN1224 II, III Prohibited 3A
• knives and sharp instruments - general · USPSSharp instruments include all sharp-pointed or sharp-edged implements, such as knives, tools, ice picks, razor blades, stilettos, or similar devices.
• Krill meal · USPSKrill meal 4.2 UN3497 II, III Prohibited 4A
• Krypton, compressed · USPSKrypton, compressed 2.2 UN1056 n/a 2B 2B
• Krypton, refrigerated liquid (cryogenic liquid) · USPSKrypton, refrigerated liquid (cryogenic liquid) 2.2 UN1970 n/a Prohibited Prohibited
• Latex paint and water-based paint (non-flammable, non-combustible) · USPSLatex paint and water-based paint that are non-flammable and non-combustible are unrestricted and not regulated as a hazardous material.
• Lead acetate · USPSLead acetate 6.1 UN1616 III 6A 6A
• Lead arsenates · USPSLead arsenates 6.1 UN1617 II Prohibited Prohibited
• Lead arsenites · USPSLead arsenites 6.1 UN1618 II Prohibited Prohibited
• Lead azide (dry) · USPSLead azide (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Lead compounds, soluble, n.o.s. · USPSLead compounds, soluble, n.o.s. 6.1 UN2291 III 6A 6A
• Lead cyanide · USPSLead cyanide 6.1 UN1620 II Prohibited Prohibited
• Lead dioxide · USPSLead dioxide 5.1 UN1872 III 5A 5A
• Lead nitrate · USPSLead nitrate 5.1 UN1469 II Prohibited Prohibited
• Lead nitroresorcinate (dry) · USPSLead nitroresorcinate (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Lead perchlorate, solid · USPSLead perchlorate, solid 5.1 UN1470 II Prohibited Prohibited
• Lead perchlorate, solution · USPSLead perchlorate, solution 5.1 UN3408 II, III Prohibited Prohibited
• Lead phosphite, dibasic · USPS · IILead phosphite, dibasic 4.1 UN2989 II Prohibited Prohibited
• Lead phosphite, dibasic · USPS · IIILead phosphite, dibasic 4.1 UN2989 III Prohibited 4A
• Lead picrate (dry) · USPSLead picrate (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Lead styphnate (dry) · USPSLead styphnate (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Lead sulfate with more than 3 percent free acid · USPSLead sulfate with more than 3 percent free acid 8 UN1794 II 8A 8A
• Lifesaving appliances, not self- inflating containing dangerous goods as equipment · USPSLifesaving appliances, not self- inflating containing dangerous goods as equipment 9 UN3072 n/a Prohibited Prohibited
• Lifesaving appliances, self-inflating · USPSLifesaving appliances, self-inflating 9 UN2990 n/a Prohibited Prohibited
• Lighter fluid · USPSLighter Fluid: Considered a flammable liquid and typically has a flashpoint between 20° F (-7° C) and 55° F (13° C). It is permitted only in domestic mail via surface transportatio
• Lighter refills containing flammable gas (Special Provision 169) · US DOT (49 CFR, all modes)Lighter refills offered for transportation under this entry may not exceed 4 fluid ounces capacity (7.22 cubic inches) or contain more than 65 grams of fuel.
• Lighters and refills containing flammable liquid or gas · Royal Mail / Post OfficeLighters and refills containing flammable liquid or gas (including used butane, petrol cigar and cigarette lighters) International – not allowed in the mail UK – not allowed in the
• Lighters and refills containing flammable liquid or gas · Royal Mail Wholesale (Access customers)Lighters and refills containing flammable liquid or gas Including used butane and petrol cigar and cigarette lighters. New and unused empty lighters are allowed.
• Lighters containing flammable gas · USPSLighters containing flammable gas 2.1 UN1057 n/a Prohibited 3C
• Lighters – empty, new or unused · Royal Mail / Post OfficeLighters – empty, new or unused UK & International – allowed in the mail, see restrictions and packaging guidelines below: Must be unopened and in their original retail packaging T

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