Hazard Class 2.2
A non-flammable, nonpoisonous compressed gas (Division 2.2) exerts a gauge pressure of 200 kPa (29.0 psig) or greater at 20°C (68°F), is a liquefied gas or a cryogenic liquid, and does not meet the definition of Division 2.1 or 2.3.
Source: 49 CFR 173.115 (eCFR).
| UN Number | Proper Shipping Name | Packing Group |
|---|---|---|
| UN1002 | Air, compressed | — |
| UN1003 | Air, refrigerated liquid, (cryogenic liquid) | — |
| UN1005 | Ammonia, anhydrous | — |
| UN1006 | Argon, compressed | — |
| UN1009 | Bromotrifluoromethane or Refrigerant gas, R 13B1. | — |
| UN1013 | Carbon dioxide | — |
| UN1018 | Chlorodifluoromethane or Refrigerant gas R 22 | — |
| UN1020 | Chloropentafluoroethane or Refrigerant gas R 115 | — |
| UN1021 | 1-Chloro-1,2,2,2-tetrafluoroethane or Refrigerant gas R 124 | — |
| UN1022 | Chlorotrifluoromethane or Refrigerant gas R 13 | — |
| UN1028 | Dichlorodifluoromethane or Refrigerant gas R 12 | — |
| UN1029 | Dichlorofluoromethane or Refrigerant gas R21 | — |
| UN1043 | Fertilizer ammoniating solution with free ammonia | — |
| UN1044 | Fire extinguishers containing compressed or liquefied gas | — |
| UN1046 | Helium, compressed | — |
| UN1056 | Krypton, compressed | — |
| UN1058 | Liquefied gases, non-flammable charged with nitrogen, carbon dioxide or air | — |
| UN1065 | Neon, compressed | — |
| UN1066 | Nitrogen, compressed | — |
| UN1070 | Nitrous oxide | — |
| UN1072 | Oxygen, compressed | — |
| UN1073 | Oxygen, refrigerated liquid (cryogenic liquid) | — |
| UN1078 | Refrigerant gases, n.o.s. | — |
| UN1080 | Sulfur hexafluoride | — |
| UN1858 | Hexafluoropropylene compressed or Refrigerant gas R 1216 | — |
| UN1913 | Neon, refrigerated liquid (cryogenic liquid) | — |
| UN1950 | Aerosols, corrosive, Packing Group II or III, (each not exceeding 1 L capacity) | — |
| UN1951 | Argon, refrigerated liquid (cryogenic liquid) | — |
| UN1952 | Ethylene oxide and carbon dioxide mixtures with not more than 9 percent ethylene oxide | — |
| UN1956 | Compressed gas, n.o.s | — |
| UN1958 | 1,2-Dichloro-1,1,2,2- tetrafluoroethane or Refrigerant gas R 114 | — |
| UN1963 | Helium, refrigerated liquid (cryogenic liquid) | — |
| UN1968 | Insecticide gases, n.o.s. | — |
| UN1970 | Krypton, refrigerated liquid (cryogenic liquid) | — |
| UN1973 | Chlorodifluoromethane and chloropentafluoroethane mixture or Refrigerant gas R 502 with fixed boiling point, with approximately 49 percent chlorodifluoromethane | — |
| UN1974 | Chlorodifluorobromomethane or Refrigerant gas R 12B1 | — |
| UN1976 | Octafluorocyclobutane, or Refrigerant gas RC 318 | — |
| UN1977 | Nitrogen, refrigerated liquid cryogenic liquid | — |
| UN1982 | Tetrafluoromethane or Refrigerant gas R 14 | — |
| UN1983 | 1-Chloro-2,2,2-trifluoroethane or Refrigerant gas R 133a | — |
| UN1984 | Trifluoromethane or Refrigerant gas R 23 | — |
| UN2036 | Xenon, compressed | — |
| UN2037 | Gas cartridges, (flammable) without a release device, non-refillable | — |
| UN2073 | Ammonia solution, relative density less than 0.880 at 15 degrees C in water, with more than 35 percent but not more than 50 percent ammonia | — |
| UN2187 | Carbon dioxide, refrigerated liquid | — |
| UN2193 | Hexafluoroethane, or Refrigerant gas R 116 | — |
| UN2201 | Nitrous oxide, refrigerated liquid | — |
| UN2422 | Octafluorobut-2-ene or Refrigerant gas R 1318 | — |
| UN2424 | Octafluoropropane or Refrigerant gas R 218 | — |
| UN2451 | Nitrogen trifluoride | — |
| UN2591 | Xenon, refrigerated liquid (cryogenic liquids) | — |
| UN2599 | Chlorotrifluoromethane and trifluoromethane azeotropic mixture or Refrigerant gas R 503 with approximately 60 percent chlorotrifluoromethane | — |
| UN2602 | Dichlorodifluoromethane and difluoroethane azeotropic mixture or Refrigerant gas R 500 with approximately 74 percent dichlorodifluoromethane | — |
| UN2857 | Refrigerating machines, containing non-flammable, non-toxic gases, or ammonia solutions (UN2672) | — |
| UN3070 | Ethylene oxide and dichlorodifluoromethane mixture, with not more than 12.5 percent ethylene oxide | — |
| UN3136 | Trifluoromethane, refrigerated liquid | — |
| UN3156 | Compressed gas, oxidizing, n.o.s. | — |
| UN3157 | Liquefied gas, oxidizing, n.o.s. | — |
| UN3158 | Gas, refrigerated liquid, n.o.s. (cryogenic liquid) | — |
| UN3159 | 1,1,1,2-Tetrafluoroethane or Refrigerant gas R 134a | — |
| UN3163 | Liquefied gas, n.o.s. | — |
| UN3164 | Articles, pressurized pneumatic or hydraulic containing non-flammable gas | — |
| UN3220 | Pentafluoroethane or Refrigerant gas R 125 | — |
| UN3296 | Heptafluoropropane or Refrigerant gas R 227 | — |
| UN3297 | Ethylene oxide and chlorotetrafluoroethane mixture with not more than 8.8 percent ethylene oxide | — |
| UN3298 | Ethylene oxide and pentafluoroethane mixture with not more than 7.9 percent ethylene oxide | — |
| UN3299 | Ethylene oxide and tetrafluoroethane mixture with not more than 5.6 percent ethylene oxide | — |
| UN3311 | Gas, refrigerated liquid, oxidizing, n.o.s. (cryogenic liquid) | — |
| UN3318 | Ammonia solution, relative density less than 0.880 at 15 degrees C in water, with more than 50 percent ammonia | — |
| UN3337 | Refrigerant gas R 404A | — |
| UN3338 | Refrigerant gas R 407A | — |
| UN3339 | Refrigerant gas R 407B | — |
| UN3340 | Refrigerant gas R 407C | — |
| UN3500 | Chemical under pressure, n.o.s | — |
| UN3502 | Chemical under pressure, toxic, n.o.s | — |
| UN3503 | Chemical under pressure, corrosive, n.o.s | — |
| UN3511 | Adsorbed gas, n.o.s | — |
| UN3513 | Adsorbed gas, oxidizing, n.o.s | — |
| UN3538 | Articles containing non-flammable, non-toxic gas, n.o.s. | — |
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