Records 1,201–1,600 — Mailing and air-carriage restrictions by item category

Records 1,201 to 1,600 of 3,204. Each links to its own page, which carries the source URL and the quoted line that states the value.

• Calcium cyanamide with more than 0.1 percent of calcium carbideCalcium cyanamide with more than 0.1 percent of calcium carbide 4.3 UN1403 III Prohibited 4A
• Calcium cyanideCalcium cyanide 6.1 UN1575 I Prohibited Prohibited
• Calcium dithionite or Calcium hydrosulfiteCalcium dithionite or Calcium hydrosulfite 4.2 UN1923 II Prohibited Prohibited
• Calcium hydrideCalcium hydride 4.3 UN1404 I Prohibited Prohibited
• Calcium hypochlorite, dry, corrosive or Calcium hypochlorite mixtures, dry, corrosive with more than 39 percent available chlorine (8.8 percent available oxygen)Calcium hypochlorite, dry, corrosive or Calcium hypochlorite mixtures, dry, corrosive with more than 39 percent available chlorine (8.8 percent available oxygen) 5.1 UN3485 II 5A 5
• Calcium hypochlorite, dry or Calcium hypochlorite mixtures dry with more than 39 percent available chlorine (8.8 percent available oxygen)Calcium hypochlorite, dry or Calcium hypochlorite mixtures dry with more than 39 percent available chlorine (8.8 percent available oxygen) 5.1 UN1748 II 5A 5A
• Calcium hypochlorite, hydrated, corrosive or Calcium hypochlorite, hydrated mixture, corrosive with not less than 5.5 percent but not more than 16 percent waterCalcium hypochlorite, hydrated, corrosive or Calcium hypochlorite, hydrated mixture, corrosive with not less than 5.5 percent but not more than 16 percent water 5.1 UN3487 II 5A 5A
• Calcium hypochlorite, hydrated or Calcium hypochlorite, hydrated mixtures, with not less than 5.5 percent but not more than 16 percent waterCalcium hypochlorite, hydrated or Calcium hypochlorite, hydrated mixtures, with not less than 5.5 percent but not more than 16 percent water 5.1 UN2880 II, III 5A 5A
• Calcium hypochlorite mixture, dry, corrosive with more than 10 percent but not more than 39 percent available chlorineCalcium hypochlorite mixture, dry, corrosive with more than 10 percent but not more than 39 percent available chlorine 5.1 UN3486 III 5A 5A
• Calcium hypochlorite mixtures, dry, with more than 10 percent but not more than 39 percent available chlorineCalcium hypochlorite mixtures, dry, with more than 10 percent but not more than 39 percent available chlorine 5.1 UN2208 III 5A 5A
• Calcium manganese siliconCalcium manganese silicon 4.3 UN2844 III Prohibited 4A
• Calcium nitrateCalcium nitrate 5.1 UN1454 III 5A 5A
• Calcium oxideCalcium oxide 8 UN1910 III 8A 8A
• Calcium perchlorateCalcium perchlorate 5.1 UN1455 II 5A 5A
• Calcium permanganateCalcium permanganate 5.1 UN1456 II 5A 5A
• Calcium peroxideCalcium peroxide 5.1 UN1457 II 5A 5A
• Calcium phosphideCalcium phosphide 4.3 UN1360 I Prohibited Prohibited
• Calcium, pyrophoric or Calcium alloys, pyrophoricCalcium, pyrophoric or Calcium alloys, pyrophoric 4.2 UN1855 I Prohibited Prohibited
• Calcium resinateCalcium resinate 4.1 UN1313 III Prohibited Prohibited
• Calcium resinate, fusedCalcium resinate, fused 4.1 UN1314 III Prohibited Prohibited
• Calcium silicideCalcium silicide 4.3 UN1405 II, III Prohibited 4A
• Camphor oilCamphor oil 3 UN1130 III Prohibited 3A
• Camphor, syntheticCamphor, synthetic 4.1 UN2717 III Prohibited Prohibited
• CandlesSome items, such as certain candles, perfumes, aerosols, nail polish, or items containing lithium batteries, may have special shipping requirements.
• Canned heat (Sterno)Canned Heat (Sterno): Considered a flammable liquid and typically has a flashpoint between 40° F (4° C) and 80° F (27° C). It is mailable if it qualifies as a Limited Quantity surf
• Capacitor, electric double layer (with an energy storage capacity greater than 0.3 Wh)Capacitor, electric double layer (with an energy storage capacity greater than 0.3 Wh) 9 UN3499 n/a Prohibited 9C
• Caproic acidCaproic acid 8 UN2829 III 8A 8A
• Carbamate pesticides, liquid, flammable, toxic, flashpoint less than 23° C · USPSCarbamate pesticides, liquid, flammable, toxic, flashpoint less than 23° C 3 UN2758 I, II Prohibited Prohibited
• Carbon, activatedCarbon, activated 4.2 UN1362 III Prohibited Prohibited
• Carbon, animal or vegetable originCarbon, animal or vegetable origin 4.2 UN1361 II, III Prohibited Prohibited
• Carbon dioxideCarbon dioxide 2.2 UN1013 n/a 2B 2B
• Carbon dioxide, refrigerated liquidCarbon dioxide, refrigerated liquid 2.2 UN2187 n/a 2B 2B
• Carbon dioxide, solid, or Dry iceCarbon dioxide, solid, or Dry ice 9 UN1845 III 9A 9A
• Carbon disulfideCarbon disulfide 3 UN1131 I Prohibited Prohibited
• Carbon monoxide, compressedCarbon monoxide, compressed 2.3 UN1016 n/a Prohibited Prohibited
• Carbon monoxide, refrigerated liquid (cryogenic liquid)Carbon monoxide, refrigerated liquid (cryogenic liquid) 2.3 NA9202 n/a Prohibited Prohibited
• Carbon tetrabromideCarbon tetrabromide 6.1 UN2516 III 6A 6A
• Carbon tetrachlorideCarbon tetrachloride 6.1 UN1846 II Prohibited Prohibited
• Carbonated beveragesCarbonated Beverages: These items are not regulated as hazardous materials and are mailable without restriction but must be properly packaged in accordance with DMM 601.
• Carbonyl fluorideCarbonyl fluoride 2.3 UN2417 n/a Prohibited Prohibited
• Carbonyl sulfideCarbonyl sulfide 2.3 UN2204 n/a Prohibited Prohibited
• Cartridges, flashCartridges, flash 1.1G UN0049 II Prohibited Prohibited
• Cartridges for weapons, blankCartridges for weapons, blank 1.1C UN0326 II Prohibited Prohibited
• Cartridges for weapons, blank or Cartridges, small arms, blankCartridges for weapons, blank or Cartridges, small arms, blank 1.3C UN0327 II Prohibited Prohibited
• Cartridges for weapons, inert projectileCartridges for weapons, inert projectile 1.2C UN0328 II Prohibited Prohibited
• Cartridges for weapons, inert projectile or Cartridges, small armsCartridges for weapons, inert projectile or Cartridges, small arms 1.3C UN0417 II Prohibited Prohibited
• Cartridges for weapons, with bursting chargeCartridgesfor weapons, withbursting charge 1.1E UN0006 II Prohibited Prohibited
• Cartridges, oil wellCartridges, oil well 1.3C UN0277 II Prohibited Prohibited
• Cartridges, power deviceCartridges, power device 1.2C UN0381 II Prohibited Prohibited
• Cartridges, signalCartridges, signal 1.3G UN0054 II Prohibited Prohibited
• Cartridgesfor weapons, withbursting charge · USPSCartridgesfor weapons, withbursting charge 1.1E UN0006 II Prohibited Prohibited
• Cases, cartridge, empty with primerCases, cartridge, empty with primer 1.4S UN0055 II Prohibited Prohibited
• Cases, cartridges, empty with primerCases, cartridges, empty with primer 1.4C UN0379 II Prohibited Prohibited
• Cases, combustible, empty, without primerCases, combustible, empty, without primer 1.4C UN0446 II Prohibited Prohibited
• Castor beans or Castor meal or Castor pomace or Castor flakeCastor beans or Castor meal or Castor pomace or Castor flake 9 UN2969 II Prohibited 9C
• Category A infectious substances (UN2814, UN2900)Category A: An infectious substance transported in a form capable of causing permanent disability or life-threatening or fatal disease in otherwise healthy humans or animals when e
• Category B infectious substances (UN3373)Domestic Mail: Infectious substances are mailable only when intended for medical or veterinary use, research, or laboratory certification related to public health, and must be prop
• Caustic alkali liquids, n.o.s.Caustic alkali liquids, n.o.s. 8 UN1719 II, III 8A 8A
• Cells, containing sodium · USPSCells, containing sodium 4.3 UN3292 II Prohibited Prohibited
• Celluloid, in block, rods, rolls, sheets, tubes, etc., except scrapCelluloid, in block, rods, rolls, sheets, tubes, etc., except scrap 4.1 UN2000 III Prohibited Prohibited
• Celluloid, scrapCelluloid, scrap 4.2 UN2002 III Prohibited Prohibited
• Cerium, slabs, ingots, or rodsCerium, slabs, ingots, or rods 4.1 UN1333 II Prohibited Prohibited
• Cerium, turnings or gritty powderCerium, turnings or gritty powder 4.3 UN3078 II Prohibited 4A
• Cesium nitrate or Caesium nitrateCesium nitrate or Caesium nitrate 5.1 UN1451 III 5A 5A
• Cesium or CaesiumCesium or Caesium 4.3 UN1407 I Prohibited Prohibited
• Charcoal briquettes, shell, screenings, wood, etc.Charcoal briquettes, shell, screenings, wood, etc. 4.2 NA1361 III Prohibited 4A
• Charges, bursting, plastics bondedCharges, bursting, plastics bonded 1.1D UN0457 II Prohibited Prohibited
• Charges, demolitionCharges, demolition 1.1D UN0048 II Prohibited Prohibited
• Charges, depthCharges, depth 1.1D UN0056 II Prohibited Prohibited
• Charges, explosive, commercial without detonatorCharges, explosive, commercial without detonator 1.1D UN0442 II Prohibited Prohibited
• Charges, propellingCharges, propelling 1.1C UN0271 II Prohibited Prohibited
• Charges, propelling, for cannonCharges, propelling, for cannon 1.1C UN0279 II Prohibited Prohibited
• Charges, shaped, flexible, linearCharges, shaped, flexible, linear 1.1D UN0288 II Prohibited Prohibited
• Charges, shaped, without detonatorCharges, shaped, without detonator 1.1D UN0059 II Prohibited Prohibited
• Charges, supplementary explosiveCharges, supplementary explosive 1.1D UN0060 II Prohibited Prohibited
• Chemical kitChemical kit 8 NA1760 II 8A 8A
• Chemical kitsChemical kits 9 UN3316 II, III 9C 9C
• Chemical under pressure, corrosive, n.o.s.Chemical under pressure, corrosive, n.o.s. 2.1 UN3503 n/a Prohibited 2B
• Chemical under pressure, flammable, corrosive, n.o.s.Chemical under pressure, flammable, corrosive, n.o.s. 2.1 UN3505 Prohibited Prohibited Prohibited
• Chemical under pressure, flammable, n.o.s.Chemical under pressure, flammable, n.o.s. 2.1 UN3501 Prohibited Prohibited Prohibited
• Chemical under pressure, flammable, toxic, n.o.s.Chemical under pressure, flammable, toxic, n.o.s. 2.1 UN3504 Prohibited Prohibited Prohibited
• Chemical under pressure, n.o.sChemical under pressure, n.o.s 2.2 UN3500 Prohibited Prohibited 2B
• Chemical under pressure, toxic, n.o.sChemical under pressure, toxic, n.o.s 2.2 UN3502 Prohibited Prohibited 2B
• Chloral, anhydrous, inhibitedChloral, anhydrous, inhibited 6.1 UN2075 II Prohibited Prohibited
• Chlorate and borate mixturesChlorate and borate mixtures 5.1 UN1458 II, III 5A 5A
• Chlorate and magnesium chloride mixture solidChlorate and magnesium chloride mixture solid 5.1 UN1459 II 5A 5A
• Chlorate and magnesium chloride mixture solutionChlorate and magnesium chloride mixture solution 5.1 UN3407 II, III 5A 5A
• Chlorates, inorganic, aqueous solutions, n.o.s.Chlorates, inorganic, aqueous solutions, n.o.s. 5.1 UN3210 II, III 5A 5A
• Chlorates, inorganic, n.o.s.Chlorates, inorganic, n.o.s. 5.1 UN1461 II 5A 5A
• Chloric acid aqueous solution, with not more than 10 percent chloric acidChloric acid aqueous solution, with not more than 10 percent chloric acid 5.1 UN2626 II Prohibited Prohibited
• Chlorine · USPSChlorine 2.3 UN1017 n/a Prohibited Prohibited
• Chlorine azideChlorine azide Forbidden Prohibited Prohibited Prohibited Prohibited
• Chlorine dioxide hydrate, frozenChlorine dioxide hydrate, frozen.
• Chlorine dioxide, hydrate, frozenChlorine dioxide, hydrate, frozen 5.1 NA9191 II Prohibited Prohibited
• Chlorine dioxide (not hydrate)Chlorine dioxide (not hydrate) Forbidden Prohibited Prohibited Prohibited Prohibited
• Chlorine pentafluorideChlorine pentafluoride 2.3 UN2548 n/a Prohibited Prohibited
• Chlorine trifluorideChlorine trifluoride 2.3 UN1749 n/a Prohibited Prohibited
• Chlorite solutionChlorite solution 8 UN1908 II, III 8A 8A
• Chlorites, inorganic, n.o.s.Chlorites, inorganic, n.o.s. 5.1 UN1462 II 5A 5A
• Chloroacetic acid, moltenChloroacetic acid, molten 6.1 UN3250 II Prohibited Prohibited
• Chloroacetic acid, solidChloroacetic acid, solid 6.1 UN1751 II Prohibited Prohibited
• Chloroacetic acid, solutionChloroacetic acid, solution 6.1 UN1750 II Prohibited Prohibited
• Chloroacetone, stabilizedChloroacetone, stabilized 6.1 UN1695 I Prohibited Prohibited
• Chloroacetone (unstabilized)Chloroacetone (unstabilized) Forbidden Prohibited Prohibited Prohibited Prohibited
• ChloroacetonitrileChloroacetonitrile 6.1 UN2668 II Prohibited Prohibited
• Chloroacetophenone (CN), liquidChloroacetophenone (CN), liquid 6.1 UN3416 II Prohibited Prohibited
• Chloroacetophenone (CN), solidChloroacetophenone (CN), solid 6.1 UN1697 II Prohibited Prohibited
• Chloroacetyl chlorideChloroacetyl chloride 6.1 UN1752 I Prohibited Prohibited
• Chloroanilines, liquidChloroanilines, liquid 6.1 UN2019 II Prohibited Prohibited
• Chloroanilines, solidChloroanilines, solid 6.1 UN2018 II Prohibited Prohibited
• ChloroanisidinesChloroanisidines 6.1 UN2233 III 6A 6A
• ChlorobenzeneChlorobenzene 3 UN1134 III Prohibited 3A
• ChlorobenzotrifluoridesChlorobenzotrifluorides 3 UN2234 III Prohibited 3A
• Chlorobenzyl chlorides, liquidChlorobenzyl chlorides, liquid 6.1 UN2235 III 6A 6A
• Chlorobenzyl chlorides, solidChlorobenzyl chlorides, solid 6.1 UN3427 III 6A 6A
• ChlorobutanesChlorobutanes 3 UN1127 II Prohibited 3A
• Chlorocresols, solidChlorocresols, solid 6.1 UN3437 II Prohibited Prohibited
• Chlorocresols, solutionChlorocresols, solution 6.1 UN2669 II, III Prohibited Prohibited
• Chlorodifluorobromomethane or Refrigerant gas R 12B1Chlorodifluorobromomethane or Refrigerant gas R 12B1 2.2 UN1974 n/a 2B 2B
• Chlorodifluoromethane and chloropentafluoroethane mixture or Refrigerant gas R 502 with fixed boiling point, with approximately 49 percent chlorodifluoromethaneChlorodifluoromethane and chloropentafluoroethane mixture or Refrigerant gas R 502 with fixed boiling point, with approximately 49 percent chlorodifluoromethane 2.2 UN1973 n/a 2B 2
• Chlorodifluoromethane or Refrigerant gas R 22Chlorodifluoromethane or Refrigerant gas R 22 2.2 UN1018 n/a 2B 2B
• Chlorodinitrobenzenes, liquidChlorodinitrobenzenes, liquid 6.1 UN1577 II Prohibited Prohibited
• Chlorodinitrobenzenes, solidChlorodinitrobenzenes, solid 6.1 UN3441 II Prohibited Prohibited
• ChloroformChloroform 6.1 UN1888 III 6A 6A
• Chloroformates, toxic, corrosive, flammable, n.o.s.Chloroformates, toxic, corrosive, flammable, n.o.s. 6.1 UN2742 II Prohibited Prohibited
• Chloroformates, toxic, corrosive, n.o.s.Chloroformates, toxic, corrosive, n.o.s. 6.1 UN3277 II Prohibited Prohibited
• Chloromethyl chloroformateChloromethyl chloroformate 6.1 UN2745 II Prohibited Prohibited
• Chloromethyl ethyl etherChloromethyl ethyl ether 3 UN2354 II Prohibited Prohibited
• ChloronitroanilinesChloronitroanilines 6.1 UN2237 III 6A 6A
• Chloronitrobenzene, liquidChloronitrobenzene, liquid 6.1 UN3409 II Prohibited Prohibited
• Chloronitrobenzenes, solidChloronitrobenzenes, solid 6.1 UN1578 II Prohibited Prohibited
• Chloronitrotoluenes, liquidChloronitrotoluenes, liquid 6.1 UN2433 III 6A 6A
• Chloronitrotoluenes, solidChloronitrotoluenes, solid 6.1 UN3457 III 6A 6A
• Chloropentafluoroethane or Refrigerant gas R 115Chloropentafluoroethane or Refrigerant gas R 115 2.2 UN1020 n/a 2B 2B
• Chlorophenolates, liquid or Phenolates, liquidChlorophenolates, liquid or Phenolates, liquid 8 UN2904 III 8A 8A
• Chlorophenolates, solid or Phenolates, solidChlorophenolates, solid or Phenolates, solid 8 UN2905 III 8A 8A
• Chlorophenols, liquidChlorophenols, liquid 6.1 UN2021 III 6A 6A
• Chlorophenols, solidChlorophenols, solid 6.1 UN2020 III 6A 6A
• ChlorophenyltrichlorosilaneChlorophenyltrichlorosilane 8 UN1753 II Prohibited Prohibited
• ChloropicrinChloropicrin 6.1 UN1580 I Prohibited Prohibited
• Chloropicrin and methyl bromide mixturesChloropicrin and methyl bromide mixtures 2.3 UN1581 n/a Prohibited Prohibited
• Chloropicrin and methyl chloride mixturesChloropicrin and methyl chloride mixtures 2.3 UN1582 n/a Prohibited Prohibited
• Chloropicrin mixtures, n.o.s. · USPSChloropicrin mixtures, n.o.s. 6.1 UN1583 I, II, III Prohibited Prohibited
• Chloropivaloyl chlorideChloropivaloyl chloride 6.1 NA9263 I Prohibited Prohibited
• Chloroplatinic acid, solidChloroplatinic acid, solid 8 UN2507 III 8A 8A
• Chloroprene, stabilizedChloroprene, stabilized 3 UN1991 I Prohibited Prohibited
• Chloroprene, uninhibitedChloroprene, uninhibited Forbidden Prohibited Prohibited Prohibited Prohibited
• Chlorosilanes, corrosive, flammable, n.o.s.Chlorosilanes, corrosive, flammable, n.o.s. 8 UN2986 II Prohibited Prohibited
• Chlorosilanes, corrosive, n.o.s.Chlorosilanes, corrosive, n.o.s. 8 UN2987 II 8A 8A
• Chlorosilanes, flammable, corrosive, n.o.s.Chlorosilanes, flammable, corrosive, n.o.s. 3 UN2985 II Prohibited Prohibited
• Chlorosilanes, toxic, corrosive, flammable, n.o.s.Chlorosilanes, toxic, corrosive, flammable, n.o.s. 6.1 UN3362 II Prohibited Prohibited
• Chlorosilanes, toxic, corrosive, n.o.s.Chlorosilanes, toxic, corrosive, n.o.s. 6.1 UN3361 II Prohibited Prohibited
• Chlorosilanes, water-reactive, flammable, corrosive, n.o.s.Chlorosilanes, water-reactive, flammable, corrosive, n.o.s. 4.3 UN2988 I Prohibited Prohibited
• Chlorosulfonic acid (with or without sulfur trioxide)Chlorosulfonic acid (with or without sulfur trioxide) 8 UN1754 I Prohibited Prohibited
• ChlorotoluenesChlorotoluenes 3 UN2238 III Prohibited 3A
• Chlorotoluidines, liquidChlorotoluidines, liquid 6.1 UN3429 III 6A 6A
• Chlorotoluidines, solidChlorotoluidines, solid 6.1 UN2239 III 6A 6A
• Chlorotrifluoromethane and trifluoromethane azeotropic mixture or Refrigerant gas R 503 with approximately 60 percent chlorotrifluoromethaneChlorotrifluoromethane and trifluoromethane azeotropic mixture or Refrigerant gas R 503 with approximately 60 percent chlorotrifluoromethane 2.2 UN2599 n/a 2B 2B
• Chlorotrifluoromethane or Refrigerant gas R 13ChlorotrifluoromethaneorRefrigerant gas R 13 2.2 UN1022 n/a 2B 2B
• ChlorotrifluoromethaneorRefrigerant gas R 13 · USPSChlorotrifluoromethaneorRefrigerant gas R 13 2.2 UN1022 n/a 2B 2B
• Chromic acid, solidChromic acid, solid 5.1 NA1463 II Prohibited Prohibited
• Chromic acid solutionChromic acid solution 8 UN1755 II, III 8A 8A
• Chromic fluoride, solidChromic fluoride, solid 8 UN1756 II 8A 8A
• Chromic fluoride, solutionChromic fluoride, solution 8 UN1757 II, III 8A 8A
• Chromium nitrateChromium nitrate 5.1 UN2720 III 5A 5A
• Chromium oxychlorideChromium oxychloride 8 UN1758 I Prohibited Prohibited
• Chromium trioxide, anhydrousChromium trioxide, anhydrous 5.1 UN1463 II Prohibited Prohibited
• Chromosulfuric acidChromosulfuric acid 8 UN2240 I Prohibited Prohibited
• Cigarette lighters charged with fuel (NA1057)Cigarette Lighters (NA1057): Generally classified as Class 3 flammable liquid, lighters charged with fuel and having an ignition system (or similar heating, lighting, or ignition d
• cigarettesAny roll of tobacco wrapped in paper or in any substance not containing tobacco, or a roll of tobacco wrapped in any substance containing tobacco that, due to its appearance, the t
• Cigarettes, Cigars, & TobaccoCigarettes and smokeless tobacco are restricted items and can only be mailed in limited circumstances. Cigars may be mailed domestically.
• Cleaning agents and solvents (flammable liquid)Cleaning Agents and Solvents: A flammable liquid. It is mailable if it qualifies as Limited Quantity surface materials and meet the conditions in 343.21 as applicable.
• Coal briquettes, hotCoal briquettes, hot Forbidden Prohibited Prohibited Prohibited Prohibited
• Coal gas, compressedCoal gas, compressed 2.3 UN1023 n/a Prohibited Prohibited
• Coal tar distillates, flammableCoal tar distillates, flammable 3 UN1136 II, III Prohibited 3A
• Coating solution (includes surface treatments or coatings used for industrial or other purposes such as vehicle undercoating, drum or barrel lining)Coating solution (includes surface treatments or coatings used for industrial or other purposes such as vehicle undercoating, drum or barrel lining) 3 UN1139 I, II, III Prohibited
• Cobalt naphthenates, powderCobalt naphthenates, powder 4.1 UN2001 III Prohibited 4A
• Cobalt resinate, precipitatedCobalt resinate, precipitated 4.1 UN1318 III Prohibited 4A
• Coke, hotCoke, hot Forbidden Prohibited Prohibited Prohibited Prohibited
• Combustible liquids — domestic airDomestic Mail via Air Transportation: Combustible liquids are mailable if they qualify as ID8000 materials
• Combustible liquids — domestic surfaceDomestic Mail via Surface Transportation: Combustible liquids are mailable if they qualify as Limited Quantity and consumer commodity materials
• Combustible Liquids (Hazard Class 3)//pe.usps.com/text/pub52/pub52c3_022.htm> 343 Flammable and Combustible Liquids (Hazard Class 3) <https://pe.usps.com/text/pub52/pub52c3_023.htm> 344 Flammable Solids (Hazard Class
• Combustible liquids — international mailInternational Mail: Combustible liquids are prohibited.
• Commercial parcels — USPS Hazmat Quality compliance categoryUSPS is creating a new compliance category called "Hazmat Quality" (HQ) with a 100 percent compliance threshold — meaning zero tolerance.
• Common household dry-cell batteries (AA, AAA, C, D, etc.)Household Dry-Cell Batteries: Common household battery types (AA, AAA, C, D, etc.) are generally not regulated as hazardous materials and are mailable.
• Compact fluorescent lamps and similar devices with small amounts of mercury (UN3506)Manufactured devices that contain small amounts of mercury (UN3506): Compact Fluorescent Lamps (CFL) and similar consumer devices containing minute amounts of mercury are mailable
• Components, explosive train, n.o.s.Components, explosive train, n.o.s. 1.2B UN0382 II Prohibited Prohibited
• Compressed gas, flammable, n.o.s.Compressed gas, flammable, n.o.s. 2.1 UN1954 n/a Prohibited 2A
• Compressed gas, n.o.s.Compressed gas, n.o.s. 2.2 UN1956 n/a 2B 2B
• Compressed gas, oxidizing, n.o.s.Compressed gas, oxidizing, n.o.s. 2.2 UN3156 n/a 2B 2B
• Compressed gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone A, B, C, or DCompressed gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone A, B, C, or D 2.3 UN3304 n/a Prohibited Prohibited
• Compressed gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone A, B, C, or DCompressed gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone A, B, C, or D 2.3 UN3305 n/a Prohibited Prohibited
• Compressed gas, toxic, flammable, n.o.s. Inhalation Hazard Zone A, B, C, or DCompressed gas, toxic, flammable, n.o.s. Inhalation Hazard Zone A, B, C, or D 2.3 UN1953 n/a Prohibited Prohibited
• Compressed gas, toxic, n.o.s. Inhalation Hazard Zone A, B, C, or DCompressed gas, toxic, n.o.s. Inhalation Hazard Zone A, B, C, or D 2.3 UN1955 n/a Prohibited Prohibited
• Compressed gas, toxic, oxidizing, corrosive, n.o.s. Inhalation Hazard Zone A, B, C, or DCompressed gas, toxic, oxidizing, corrosive, n.o.s. InhalationHazard Zone A, B, C, or D 2.3 UN3306 n/a Prohibited Prohibited
• Compressed gas, toxic, oxidizing, corrosive, n.o.s. InhalationHazard Zone A, B, C, or D · USPSCompressed gas, toxic, oxidizing, corrosive, n.o.s. InhalationHazard Zone A, B, C, or D 2.3 UN3306 n/a Prohibited Prohibited
• Compressed gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone A, B, C, or DCompressed gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone A, B, C, or D 2.3 UN3303 n/a Prohibited Prohibited
• Contrivances, water-activated, with burster, expelling charge, or propelling chargeContrivances, water-activated, with burster, expelling charge, or propelling charge 1.3L UN0249 II Prohibited Prohibited
• controlled substances - DEA-registered mailersControlled substances, and drugs that contain controlled substances, are acceptable in the domestic mail only under the following conditions:
• controlled substances - Schedule I-Vthe mailing of the substance is also unlawful under 18 U.S.C. § 1716.
• Copper acetoarseniteCopper acetoarsenite 6.1 UN1585 II Prohibited Prohibited
• Copper acetylideCopper acetylide Forbidden Prohibited Prohibited Prohibited Prohibited
• Copper amine azideCopper amine azide Forbidden Prohibited Prohibited Prohibited Prohibited
• Copper arseniteCopper arsenite 6.1 UN1586 II Prohibited Prohibited
• Copper based pesticides, liquid, flammable, toxic, flashpoint less than 23° CCopper based pesticides, liquid, flammable, toxic, flashpoint less than 23° C 3 UN2776 I, II Prohibited Prohibited
• Copper chlorateCopper chlorate 5.1 UN2721 II 5A 5A
• Copper chlorideCopper chloride 8 UN2802 III 8A 8A
• Copper cyanideCopper cyanide 6.1 UN1587 II Prohibited Prohibited
• Copper tetramine nitrateCopper tetramine nitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• CopraCopra 4.2 UN1363 III Prohibited Prohibited
• Cord, detonating, flexibleCord, detonating, flexible 1.1D UN0065 II Prohibited Prohibited
• Cord, detonating, mild effect or Fuse, detonating, mild effect metal cladCord, detonating, mild effect or Fuse, detonating, mild effect metal clad 1.4D UN0104 II Prohibited Prohibited
• Cord detonating or Fuse detonating metal cladCord detonating or Fuse detonating metal clad 1.2D UN0102 II Prohibited Prohibited
• Cord, detonating or Fuse, detonating metal clad · USPSCord, detonating or Fuse, detonating metal clad 1.1D UN0290 II Prohibited Prohibited
• Cord, igniterCord, igniter 1.4G UN0066 II Prohibited Prohibited
• Corrosive liquid, basic, inorganic, n.o.sCorrosive liquid, basic, inorganic, n.o.s 8 UN3266 II, III 8A 8A
• Corrosive liquid, basic, inorganic, n.o.s. · USPSCorrosive liquid, basic, inorganic, n.o.s. 8 UN3266 I Prohibited Prohibited
• Corrosive liquid mixtures qualifying as Limited Quantity — domesticDomestic Mail: Corrosive materials may be mailable if they meet Limited Quantity requirements for air or surface transportation
• Corrosive liquids, flammable, n.o.s.Corrosive liquids, flammable, n.o.s. 8 UN2920 I, II Prohibited Prohibited
• Corrosive liquids, oxidizing, n.o.s.Corrosive liquids, oxidizing, n.o.s. 8 UN3093 I, II Prohibited Prohibited
• Corrosive liquids, water-reactive, n.o.s.Corrosive liquids, water-reactive, n.o.s. 8 UN3094 I, II Prohibited Prohibited
• Corrosive solids, flammable, n.o.s.Corrosive solids, flammable, n.o.s. 8 UN2921 I, II Prohibited Prohibited
• Corrosive solids, oxidizing, n.o.s.Corrosive solids, oxidizing, n.o.s. 8 UN3084 I, II Prohibited Prohibited
• Corrosive solids, self-heating, n.o.s.Corrosive solids, self-heating, n.o.s. 8 UN3095 I, II Prohibited Prohibited
• Corrosive solids, water-reactive, n.o.s.Corrosive solids, water-reactive, n.o.s. 8 UN3096 I, II Prohibited Prohibited
• Corrosives (Hazard Class 8) — international mailInternational Mail: All corrosives are prohibited.
• CottonCotton 9 NA1365 n/a Prohibited Prohibited
• Cotton waste, oilyCotton waste, oily 4.2 UN1364 III Prohibited Prohibited
• Cotton, wetCotton, wet 4.2 UN1365 III Prohibited Prohibited
• Coumarin derivative pesticides, liquid, flammable, toxic, flashpoint less than 23° CCoumarin derivative pesticides, liquid, flammable, toxic, flashpoint less than 23° C 3 UN3024 I, II Prohibited Prohibited
• covered products (cigarettes, smokeless tobacco, ENDS) - general prohibitionThe Postal Service will not accept, forward, or deliver packages it knows, or reasonably believes, to contain nonmailable covered products.
• covered products - seizure and forfeitureNonmailable covered products deposited in the mail are subject to seizure and forfeiture.
• Cremated RemainsOther Guidelines on Shipping & Packaging Cremated Remains
• Cresols, liquidCresols, liquid 6.1 UN2076 II Prohibited Prohibited
• Cresols, solidCresols, solid 6.1 UN3455 II Prohibited Prohibited
• Cresylic acidCresylic acid 6.1 UN2022 II Prohibited Prohibited
• Crotonaldehyde or Crotonaldehyde, stabilizedCrotonaldehyde or Crotonaldehyde, stabilized 6.1 UN1143 I Prohibited Prohibited
• Crotonic acid, liquidCrotonic acid, liquid 8 UN3472 III 8A 8A
• Crotonic acid, solidCrotonic acid, solid 8 UN2823 III 8A 8A
• CrotonyleneCrotonylene 3 UN1144 I Prohibited 3A
• Cutters, cable, explosiveCutters, cable, explosive 1.4S UN0070 II Prohibited Prohibited
• CyanogenCyanogen 2.3 UN1026 n/a Prohibited Prohibited
• Cyanogen bromideCyanogen bromide 6.1 UN1889 I Prohibited Prohibited
• Cyanogen chloride, stabilizedCyanogen chloride, stabilized 2.3 UN1589 n/a Prohibited Prohibited
• Cyanuric chlorideCyanuric chloride 8 UN2670 II Prohibited Prohibited
• Cyanuric triazideCyanuric triazide Forbidden Prohibited Prohibited Prohibited Prohibited
• CyclobutaneCyclobutane 2.1 UN2601 n/a Prohibited 2A
• Cyclobutyl chloroformateCyclobutyl chloroformate 6.1 UN2744 II Prohibited Prohibited
• CycloheptaneCycloheptane 3 UN2241 II Prohibited 3A
• CycloheptatrieneCycloheptatriene 3 UN2603 II Prohibited Prohibited
• CyclohepteneCycloheptene 3 UN2242 II Prohibited 3A
• CyclohexaneCyclohexane 3 UN1145 II Prohibited 3A
• CyclohexanoneCyclohexanone 3 UN1915 III Prohibited 3A
• CyclohexeneCyclohexene 3 UN2256 II Prohibited 3A
• CyclohexenyltrichlorosilaneCyclohexenyltrichlorosilane 8 UN1762 II Prohibited Prohibited
• Cyclohexyl acetateCyclohexyl acetate 3 UN2243 III Prohibited 3A
• Cyclohexyl isocyanateCyclohexyl isocyanate 6.1 UN2488 I Prohibited Prohibited
• Cyclohexyl mercaptanCyclohexyl mercaptan 3 UN3054 III Prohibited 3A
• CyclohexylamineCyclohexylamine 8 UN2357 II Prohibited Prohibited
• CyclohexyltrichlorosilaneCyclohexyltrichlorosilane 8 UN1763 II Prohibited Prohibited
• CyclooctadienesCyclooctadienes 3 UN2520 III Prohibited 3A
• CyclooctatetraeneCyclooctatetraene 3 UN2358 II Prohibited 3A
• CyclopentaneCyclopentane 3 UN1146 II Prohibited 3A
• CyclopentanolCyclopentanol 3 UN2244 III Prohibited 3A
• CyclopentanoneCyclopentanone 3 UN2245 III Prohibited 3A
• CyclopenteneCyclopentene 3 UN2246 II Prohibited 3A
• CyclopropaneCyclopropane 2.1 UN1027 n/a Prohibited 2A
• Cyclotetramethylene tetranitramine (dry or unphlegmatized) (HMX)Cyclotetramethylene tetranitramine (dry or unphlegmatized) (HMX) Forbidden Prohibited Prohibited Prohibited Prohibited
• Cyclotetramethylenetetranitramine, desensitized or Octogen, desensitized or HMX, desensitizedCyclotetramethylenetetranitramine, desensitized or Octogen, desensitized or HMX, desensitized 1.1D UN0484 II Prohibited Prohibited
• Cyclotetramethylenetetranitramine, wetted or HMX, wetted or Octogen, wetted with not less than 15 percent water, by massCyclotetramethylenetetranitramine, wetted or HMX, wetted or Octogen, wetted with not less than 15 percent water, by mass 1.1D UN0226 II Prohibited Prohibited
• Cyclotrimethylenetrinitramine, desensitized or Cyclonite, desensitized or Hexogen, desensitized or RDX, desensitized · USPSCyclotrimethylenetrinitramine, desensitized or Cyclonite, desensitized or Hexogen, desensitized or RDX, desensitized 1.1D UN0483 II Prohibited Prohibited
• Cyclotrimethylenetrinitramine,wetted or Cyclonite, wetted or Hexogen, wetted or RDX, wetted with not less than 15 percent water by mass · USPSCyclotrimethylenetrinitramine,wetted or Cyclonite, wetted or Hexogen, wetted or RDX, wetted with not less than 15 percent water by mass 1.1D UN0072 II Prohibited Prohibited
• CymenesCymenes 3 UN2046 III Prohibited 3A
• D-i2,4-dichlorobenzoyl peroxide, with more than 75 percent with waterD-i2,4-dichlorobenzoylperoxide,with more than 75 percent with water Forbidden Prohibited Prohibited Prohibited Prohibited
• D-i2,4-dichlorobenzoylperoxide,with more than 75 percent with water · USPSD-i2,4-dichlorobenzoylperoxide,with more than 75 percent with water Forbidden Prohibited Prohibited Prohibited Prohibited
• D-i(tert-butylperoxy) phthalate, with more than 55 percent in solutionD-i(tert-butylperoxy) phthalate, with more than 55 percent in solution Forbidden Prohibited Prohibited Prohibited Prohibited
• Damaged, defective, or recalled lithium batteriesDamaged, Defective, or Recalled Batteries: Damaged, defective, or recalled batteries unless approved by the director, Product Classification
• Dangerous Goods in Machinery or Dangerous Goods in ApparatusDangerous Goods in Machinery or Dangerous Goods in Apparatus 9 UN3363 n/a Prohibited Prohibited
• DecaboraneDecaborane 4.1 UN1868 II Prohibited Prohibited
• DecahydronaphthaleneDecahydronaphthalene 3 UN1147 III Prohibited 3A
• Deflagrating metal salts of aromatic nitroderivatives, n.o.s.Deflagrating metal salts of aromatic nitroderivatives, n.o.s. 1.3C UN0132 II Prohibited Prohibited
• Denatured alcoholDenatured alcohol 3 NA1987 II, III Prohibited 3A
• Desensitized explosive, liquid, n.o.s.Desensitized explosive, liquid, n.o.s. 3 UN3379 I Prohibited Prohibited
• Desensitized explosive, solid, n.o.s.Desensitized explosive, solid, n.o.s. 4.1 UN3380 I Prohibited Prohibited
• Detonator assemblies, non-electric for blastingDetonator assemblies, non-electric for blasting 1.4B UN0361 II Prohibited Prohibited
• Detonators, electric, for blastingDetonators, electric, for blasting 1.1B UN0030 II Prohibited Prohibited
• Detonators for ammunitionDetonators for ammunition 1.1B UN0073 II Prohibited Prohibited
• Detonators, non-electric, for blastingDetonators, non-electric, for blasting 1.1B UN0029 II Prohibited Prohibited
• Deuterium, compressedDeuterium, compressed 2.1 UN1957 n/a Prohibited 2A
• Devices, small, hydrocarbon gas powered or Hydrocarbon gas refills for small devices with release deviceDevices, small, hydrocarbon gas powered or Hydrocarbon gas refills for small devices with release device 2.1 UN3150 n/a Prohibited 2A
• Di-(1-hydroxytetrazole) (dry)Di-(1-hydroxytetrazole) (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Di-(1-naphthoyl) peroxideDi-(1-naphthoyl) peroxide Forbidden Prohibited Prohibited Prohibited Prohibited
• Di-(beta-nitroxyethyl) ammonium nitrateDi-(beta-nitroxyethyl) ammonium nitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• Di-n-amylamineDi-n-amylamine 3 UN2841 III Prohibited 3A
• Di-n-butyl peroxydicarbonate, with more than 52 percent in solutionDi-n-butyl peroxydicarbonate, with more than 52 percent in solution Forbidden Prohibited Prohibited Prohibited Prohibited
• Di-n-butylamineDi-n-butylamine 8 UN2248 II Prohibited Prohibited
• Di-n-propyl etherDi-n-propyl ether 3 UN2384 II Prohibited 3A
• Diacetone alcoholDiacetone alcohol 3 UN1148 II, III Prohibited 3A
• Diacetone alcohol peroxides, with more than 57 percent in solution with more than 9 percent hydrogen peroxide, less than 26 percent diacetone alcohol and less than 9 percent water; total active oxygen content more than 9 percent by massDiacetone alcohol peroxides, with more than 57 percent in solution with more than 9 percent hydrogen peroxide, less than 26 percent diacetone alcohol and less than 9 percent water;
• Diacetyl peroxide, solid, or with more than 25 percent in solutionDiacetyl peroxide, solid, or with more than 25 percent in solution Forbidden Prohibited Prohibited Prohibited Prohibited
• DiallylamineDiallylamine 3 UN2359 II Prohibited Prohibited
• DiallyletherDiallylether 3 UN2360 II Prohibited Prohibited
• Diazoaminotetrazole (dry)Diazoaminotetrazole (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Diazodinitrophenol (dry)Diazodinitrophenol (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Diazodinitrophenol, wetted with not less than 40 percent water or mixture of alcohol and water, by massDiazodinitrophenol, wetted with not less than 40 percent water or mixture of alcohol and water, by mass 1.1A UN0074 II Prohibited Prohibited
• DiazodiphenylmethaneDiazodiphenylmethane Forbidden Prohibited Prohibited Prohibited Prohibited
• Diazonium nitrates (dry)Diazonium nitrates (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Diazonium perchlorates (dry)Diazonium perchlorates (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Dibenzyl peroxydicarbonate, with more than 87 percent with waterDibenzyl peroxydicarbonate, with more than 87 percent with water Forbidden Prohibited Prohibited Prohibited Prohibited
• DibenzyldichlorosilaneDibenzyldichlorosilane 8 UN2434 II 8A 8A
• DiboraneDiborane 2.3 UN1911 n/a Prohibited Prohibited
• Diborane mixturesDiborane mixtures 2.1 NA1911 n/a Prohibited Prohibited
• DibromoacetyleneDibromoacetylene Forbidden Prohibited Prohibited Prohibited Prohibited
• DibromochloropropaneDibromochloropropane 6.1 UN2872 III 6A 6A
• Dibromodifluoromethane, R12B2Dibromodifluoromethane, R12B2 9 UN1941 III 9C 9C
• DibromomethaneDibromomethane 6.1 UN2664 III 6A 6A
• Dibutyl ethersDibutyl ethers 3 UN1149 III Prohibited 3B
• DibutylaminoethanolDibutylaminoethanol 6.1 UN2873 III 6A 6A
• Dichloroacetic acidDichloroacetic acid 8 UN1764 II 8A 8A
• Dichloroacetyl chlorideDichloroacetyl chloride 8 UN1765 II 8A 8A
• DichloroacetyleneDichloroacetylene Forbidden Prohibited Prohibited Prohibited Prohibited
• Dichloroanilines, liquidDichloroanilines, liquid 6.1 UN1590 II Prohibited Prohibited
• Dichloroanilines, solidDichloroanilines, solid 6.1 UN3442 II Prohibited Prohibited
• DichlorobuteneDichlorobutene 8 NA2920 I Prohibited Prohibited
• Dichlorodifluoromethane and difluoroethane azeotropic mixture or Refrigerant gas R 500 with approximately 74 percent dichlorodifluoromethaneDichlorodifluoromethane and difluoroethane azeotropic mixture or Refrigerant gas R 500 with approximately 74 percent dichlorodifluoromethane 2.2 UN2602 n/a 2B 2B
• Dichlorodifluoromethane or Refrigerant gas R 12Dichlorodifluoromethane or Refrigerant gas R 12 2.2 UN1028 n/a 2B 2B
• Dichlorodimethyl ether, symmetricalDichlorodimethyl ether, symmetrical 6.1 UN2249 I Prohibited Prohibited
• Dichlorodisopropyl etherDichlorodisopropyl ether 6.1 UN2490 II Prohibited Prohibited
• Dichloroethyl sulfideDichloroethyl sulfide Forbidden Prohibited Prohibited Prohibited Prohibited
• Dichlorofluoromethane or Refrigerant gas R 21Dichlorofluoromethane or Refrigerant gas R 21 2.2 UN1029 n/a 2B 2B
• Dichloroisocyanuric acid, dry or Dichloroisocyanuric acid saltsDichloroisocyanuric acid, dry or Dichloroisocyanuric acid salts 5.1 UN2465 II 5A 5A
• DichloromethaneDichloromethane 6.1 UN1593 III 6A 6A
• DichloropentanesDichloropentanes 3 UN1152 III Prohibited 3A
• Dichlorophenyl isocyanatesDichlorophenyl isocyanates 6.1 UN2250 II Prohibited Prohibited
• DichlorophenyltrichlorosilaneDichlorophenyltrichlorosilane 8 UN1766 II Prohibited Prohibited
• DichloropropenesDichloropropenes 3 UN2047 II, III Prohibited 3A
• DichlorosilaneDichlorosilane 2.3 UN2189 n/a Prohibited Prohibited
• DichlorovinylchloroarsineDichlorovinylchloroarsine Forbidden Prohibited Prohibited Prohibited Prohibited
• Dicyclohexylamine · USPSDicyclohexylamine 8 UN2565 III 8A 8A
• Dicyclohexylammonium nitrateDicyclohexylammonium nitrate 4.1 UN2687 III Prohibited 4A
• DicyclopentadieneDicyclopentadiene 3 UN2048 III Prohibited 3A
• Didymium nitrateDidymium nitrate 5.1 UN1465 III 5A 5A
• Diesel fuel 3 NA1993 UN1202 III Prohibited 3A Diethanol nitrosamine dinitrate (dry)Diesel fuel 3 NA1993 UN1202 III Prohibited 3A Diethanol nitrosamine dinitrate (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Diesel fuel (NA1993)52/pub52apxc_001.htm#ep999476> Appendix C must be followed. Diesel Fuel (NA1993): A combustible liquid with a typical flashpoint between 110° F (43° C) and 190° F (88° C) and is ma
• DiethoxymethaneDiethoxymethane 3 UN2373 II Prohibited 3A
• Diethyl carbonateDiethyl carbonate 3 UN2366 III Prohibited 3A
• Diethyl ether or Ethyl etherDiethyl ether or Ethyl ether 3 UN1155 I Prohibited 3A
• Diethyl ketoneDiethyl ketone 3 UN1156 II Prohibited 3A
• Diethyl peroxydicarbonate, with more than 27 percent in solutionDiethyl peroxydicarbonate, with more than 27 percent in solution Forbidden Prohibited Prohibited Prohibited Prohibited
• Diethyl sulfateDiethyl sulfate 6.1 UN1594 II Prohibited Prohibited
• Diethyl sulfideDiethyl sulfide 3 UN2375 II Prohibited Prohibited
• DiethylamineDiethylamine 3 UN1154 II Prohibited Prohibited
• DiethylbenzeneDiethylbenzene 3 UN2049 III Prohibited 3A
• DiethyldichlorosilaneDiethyldichlorosilane 8 UN1767 II Prohibited Prohibited
• Diethylene glycol dinitrateDiethylene glycol dinitrate Forbidden Prohibited Prohibited Prohibited Prohibited
• Diethyleneglycol dinitrate, desensitized with not less than 25 percent nonvolatile water- insoluble phlegmatizer, by massDiethyleneglycol dinitrate, desensitized with not less than 25 percent nonvolatile water- insoluble phlegmatizer, by mass 1.1D UN0075 II Prohibited Prohibited
• DiethylenetriamineDiethylenetriamine 8 UN2079 II 8A 8A
• Diethylgold bromideDiethylgold bromide Forbidden Prohibited Prohibited Prohibited Prohibited
• Diethylthiophosphoryl chlorideDiethylthiophosphoryl chloride 8 UN2751 II Prohibited Prohibited
• Difluoromethane or Refrigerant gas R 32Difluoromethane or Refrigerant gas R 32 2.1 UN3252 n/a Prohibited 2A
• Difluorophosphoric acid, anhydrousDifluorophosphoric acid, anhydrous 8 UN1768 II Prohibited Prohibited
• DiiodoacetyleneDiiodoacetylene Forbidden Prohibited Prohibited Prohibited Prohibited
• Diisobutyl ketoneDiisobutyl ketone 3 UN1157 III Prohibited 3A
• DiisobutylamineDiisobutylamine 3 UN2361 III Prohibited 3A
• Diisobutylene, isomeric compoundsDiisobutylene, isomeric compounds 3 UN2050 II Prohibited 3A
• Diisooctyl acid phosphateDiisooctyl acid phosphate 8 UN1902 III 8A 8A
• Diisopropyl etherDiisopropyl ether 3 UN1159 II Prohibited 3A
• DiisopropylamineDiisopropylamine 3 UN1158 II Prohibited Prohibited
• Diisopropylbenzene hydroperoxide, with more than 72 percent in solutionDiisopropylbenzene hydroperoxide, with more than 72 percent in solution Forbidden Prohibited Prohibited Prohibited Prohibited
• Diketene, stabilizedDiketene, stabilized 6.1 UN2521 I Prohibited Prohibited
• Dimethyl carbonateDimethyl carbonate 3 UN1161 II Prohibited 3A
• Dimethyl disulfideDimethyl disulfide 3 UN2381 II Prohibited 3A
• Dimethyl etherDimethyl ether 2.1 UN1033 n/a Prohibited 2A
• Dimethyl-N-propylamineDimethyl-N-propylamine 3 UN2266 II Prohibited Prohibited
• Dimethyl sulfateDimethyl sulfate 6.1 UN1595 I Prohibited Prohibited
• Dimethyl sulfideDimethyl sulfide 3 UN1164 II Prohibited Prohibited
• Dimethyl thiophosphoryl chlorideDimethyl thiophosphoryl chloride 6.1 UN2267 II Prohibited Prohibited
• Dimethylamine, anhydrousDimethylamine, anhydrous 2.1 UN1032 n/a Prohibited Prohibited
• Dimethylamine solutionDimethylamine solution 3 UN1160 II Prohibited Prohibited
• Dimethylcarbamoyl chlorideDimethylcarbamoyl chloride 8 UN2262 II 8A 8A
• DimethylcyclohexanesDimethylcyclohexanes 3 UN2263 II Prohibited 3A
• DimethyldichlorosilaneDimethyldichlorosilane 3 UN1162 II Prohibited Prohibited
• DimethyldiethoxysilaneDimethyldiethoxysilane 3 UN2380 II Prohibited 3A
• DimethyldioxanesDimethyldioxanes 3 UN2707 II, III Prohibited 3A
• Dimethylhexane dihydroperoxide (dry)Dimethylhexane dihydroperoxide (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• Dimethylhydrazine, symmetricalDimethylhydrazine, symmetrical 6.1 UN2382 I Prohibited Prohibited
• Dimethylhydrazine, unsymmetricalDimethylhydrazine, unsymmetrical 6.1 UN1163 I Prohibited Prohibited
• Dinitro-7,8-dimethylglycoluril (dry)Dinitro-7,8-dimethylglycoluril (dry) Forbidden Prohibited Prohibited Prohibited Prohibited
• DinitroanilinesDinitroanilines 6.1 UN1596 II Prohibited Prohibited
• Dinitrobenzenes, liquidDinitrobenzenes, liquid 6.1 UN1597 II Prohibited Prohibited
• Dinitrobenzenes, solidDinitrobenzenes, solid 6.1 UN3443 II Prohibited Prohibited
• Dinitrogen tetroxideDinitrogen tetroxide 2.3 UN1067 n/a Prohibited Prohibited
• Dinitroglycoluril or DinguDinitroglycoluril or Dingu 1.1D UN0489 II Prohibited Prohibited
• DinitromethaneDinitromethane Forbidden Prohibited Prohibited Prohibited Prohibited
• Dinitrophenel solutionsDinitrophenel solutions 6.1 UN1599 II Prohibited Prohibited
• Dinitrophenol, dry or wetted with less than 15 percent water, by massDinitrophenol, dry or wetted with less than 15 percent water, by mass 1.1D UN0076 II Prohibited Prohibited
• Dinitrophenol, wetted with not less than 15 percent water, by massDinitrophenol, wetted with not less than 15 percent water, by mass 4.1 UN1320 I Prohibited Prohibited
• Dinitrophenolates alkali metals, dry or wetted with less than 15 percent water, by massDinitrophenolates alkali metals, dry or wetted with less than 15 percent water, by mass 1.3C UN0077 II Prohibited Prohibited
• Dinitrophenolates, wetted with not less than 15 percent water, by massDinitrophenolates, wetted with not less than 15 percent water, by mass 4.1 UN1321 I Prohibited Prohibited
• Dinitropropylene glycolDinitropropylene glycol Forbidden Prohibited Prohibited Prohibited Prohibited

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