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UN/NA 3252 · Difluoromethane
UN/NA 3252 · ERG 2024 · Guide 115
- UN/NA
- 3252
- Edition
- ERG 2024
ERG 2024 lists UN/NA 3252 (Difluoromethane) under Guide 115, titled “Gases - Flammable (Including Refrigerated Liquids)”.
Material name
3252 on a placard, orange panel or shipping paper
It can stand for either of two ERG 2024 entries: “Difluoromethane” and “Refrigerant gas R-32”. Both use Guide 115, so the number alone is enough to find the guide. On a numbered orange panel, 3252 is the lower number (how to read an orange panel).
ERG 2024 markings for 3252
3252 is not highlighted in green (no Table 1 entry), and its guide number 115 has no P.
Entries near 3252
By number (yellow pages): before 3252 come UN/NA 3249 Medicine, solid, poisonous, n.o.s. (Guide 151); UN/NA 3250 Chloroacetic acid, molten (Guide 153) and UN/NA 3251 Isosorbide-5-mononitrate (Guide 133); after it, UN/NA 3253 Disodium trioxosilicate (Guide 154); UN/NA 3254 Tributylphosphane (Guide 135) and UN/NA 3255 tert-Butyl hypochlorite (Guide 135).
By name (blue pages): “Difluoromethane” comes after Diethylthiophosphoryl chloride (UN/NA 2751, Guide 156) and Difluorochloroethanes (UN/NA 2517, Guide 115) and before Difluorophosphoric acid, anhydrous (UN/NA 1768, Guide 154) and Diisobutyl ketone (UN/NA 1157, Guide 128).
By name (blue pages): “Refrigerant gas R-32” comes after Refrigerant gas R-22 (UN/NA 1018, Guide 126) and Refrigerant gas R-23 (UN/NA 1984, Guide 126) and before Refrigerant gas R-40 (UN/NA 1063, Guide 115) and Refrigerant gas R-41 (UN/NA 2454, Guide 115).
Other names starting with “Refrigerant”: Refrigerant gas R-13B1 (UN/NA 1009, Guide 126); Refrigerant gas R-14 (UN/NA 1982, Guide 126); Refrigerant gas R-21 (UN/NA 1029, Guide 126); Refrigerant gas R-114 (UN/NA 1958, Guide 126); Refrigerant gas R-115 (UN/NA 1020, Guide 126) and Refrigerant gas R-116 (UN/NA 2193, Guide 126).
Guide 115 · Library
Guide 115 covers 52 UN/NA numbers. The 12 around 3252 in the guide’s number order: UN/NA 3150 Devices, small, hydrocarbon gas powered, with release device; UN/NA 3153 Perfluoro(methyl vinyl ether); UN/NA 3154 Perfluoro(ethyl vinyl ether); UN/NA 3161 Liquefied gas, flammable, n.o.s.; UN/NA 3166 Vehicle, flammable gas powered; UN/NA 3167 Gas sample, non-pressurized, flammable, n.o.s., not refrigerated liquid; UN/NA 3312 Gas, refrigerated liquid, flammable, n.o.s.; UN/NA 3354 Insecticide gas, flammable, n.o.s.; UN/NA 3358 Refrigerating machines, containing flammable, non-poisonous, liquefied gas; UN/NA 3468 Hydrogen in a metal hydride storage system; UN/NA 3478 Fuel cell cartridges, containing liquefied flammable gas; UN/NA 3479 Fuel cell cartridges, containing hydrogen in metal hydride.
Source: ERG 2024 (U.S. DOT PHMSA, Transport Canada, SICT Mexico), for the initial phase of a transportation incident only. Hazora is not an official ERG publication and is not affiliated with or endorsed by these or any other government agencies.