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Hazard Class 2.1Hazard Class 2.2

UN Number

UN2037

Gas cartridges, (flammable) without a release device, non-refillable

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

4 rows in 49 CFR 172.101 for UN2037.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Gas cartridges, (flammable) without a release device, non-refillable2.1—2.1—306304None1 kg15 kgB40, 157
—Receptacles, small, containing gas or gas cartridges (flammable) without release device, not refillable and not exceeding 1 L capacity2.1—2.1—306304None1 kg15 kgB40, 157
—Receptacles, small, containing gas or gas cartridges (non-flammable) without release device, not refillable and not exceeding 1 L capacity2.2—2.2—306304None1 kg15 kgB40, 157
—Receptacles, small, containing gas or gas cartridges (oxidizing), without release device, not refillable and not exceeding 1 L capacity2.2—2.2, 5.1, A14306304None1 kg15 kgB40, 157
  • 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

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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).

Division 2.2 — Non-Flammable, Non-Poisonous Gas

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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).

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