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HomeUN NumbersClass 2.1UN2453
Hazard Class 2.1

UN Number

UN2453

Ethyl fluoride or Refrigerant gas R161

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN2453.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Ethyl fluoride or Refrigerant gas R1612.1—2.1—306304314, 315Forbidden150 kgE40
  • Sym.: Column 1 symbols, 49 CFR 172.101(b).
  • Description: Column 2, the proper shipping name, 172.101(c).
  • Class: Column 3, hazard class or division, 172.101(d).
  • PG: Column 5, packing group, 172.101(f).
  • Labels: Column 6, label codes, 172.101(g).
  • Special provisions: Column 7, codes explained in 49 CFR 172.102, 172.101(h).
  • 8A / 8B / 8C: Packaging exceptions, non-bulk and bulk sections of 49 CFR part 173 (an entry of 202 means 173.202), 172.101(i).
  • 9A / 9B: Maximum quantity per package on passenger aircraft or rail, and on cargo aircraft only, 172.101(j).
  • 10A / 10B: Vessel stowage location and other stowage and handling codes, 172.101(k).

Division 2.1 — Flammable Gas

See the full class list

A flammable gas (Division 2.1) is any material which is a gas at 20°C (68°F) or less and 101.3 kPa (14.7 psia) of pressure that is ignitable at 13 percent or less by volume with air, or has a flammable range with air of at least 12 percent regardless of the lower limit.

Source: 49 CFR 173.115 (eCFR).

Previous / next UN number

UN2452Ethylacetylene, stabilizedUN2454Methyl fluoride, or Refrigerant gas R 41

Nearby Class 2.1 UN Numbers

UN2200Propadiene, stabilizedUN2203SilaneUN2419BromotrifluoroethyleneUN25171-Chloro-1,1-difluoroethane or Refrigerant gas R 142bUN2601CyclobutaneUN3138Ethylene, acetylene and propylene in mixture, refrigerated liquid with at least 71.5 percent ethylene with not more than 22.5 percent acetylene and not more than 6 percent propylene
View the full Class 2.1 list →

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