UN 2003Metal alkyls, water-reactive, n.o.s. or Metal aryls, water-reactive, n.o.s.
Division 4.2
Spontaneously combustible
Summary
UN 2003 is the UN number for metal alkyls, water-reactive, n.o.s. or Metal aryls, water-reactive, n.o.s. It is classed in Division 4.2 (spontaneously combustible) of Class 4 for transport.
Identification
- UN number
- UN 2003
- Name
- Metal alkyls, water-reactive, n.o.s. or Metal aryls, water-reactive, n.o.s.
- Hazard class
- Class 4: Flammable solids
- Division
- 4.2: Spontaneously combustible
- What the class covers
- Substances liable to spontaneous combustion.
About Class 4
Class 4 covers flammable solids and other substances that can catch fire. Division 4.1 is flammable solids and self-reactive substances, 4.2 is substances that can spontaneously combust in air, and 4.3 is substances that give off flammable gas when wet.
Check the official sources
For emergency response, packaging and quantity limits, use these:
- CAMEO Chemicals: UN/NA 2003NOAA 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