UN 1981Rare gases and nitrogen mixtures, compressed
Class 2
Gases
Summary
UN 1981 is the UN number for rare gases and nitrogen mixtures, compressed. It is classed in Class 2 (gases) for transport.
Identification
- UN number
- UN 1981
- Name
- Rare gases and nitrogen mixtures, compressed
- Hazard class
- Class 2: Gases
- What the class covers
- Compressed, liquefied, dissolved or refrigerated gases.
About Class 2
Class 2 covers gases, whether compressed, liquefied, dissolved under pressure or refrigerated. Division 2.1 is flammable gases such as propane, 2.2 is non-flammable, non-toxic gases such as nitrogen, and 2.3 is toxic gases such as chlorine.
Check the official sources
For emergency response, packaging and quantity limits, use these:
- CAMEO Chemicals: UN/NA 1981NOAA datasheets with the ERG response guide and isolation distances
- Emergency Response Guidebook (ERG)PHMSA's guide for first responders, free as a PDF or app
- 49 CFR 172.101 Hazardous Materials TableThe legal U.S. entry: proper shipping name, packing group, labels and special provisions