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Hazard Class 4.1

UN Number

UN3231

Self-reactive liquid type B, temperature controlled

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN3231.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
GSelf-reactive liquid type B, temperature controlled4.1—4.153None224NoneForbiddenForbiddenD2, 25, 52, 53
  • 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 4.1 — Flammable Solid

See the full class list

Flammable solid (Division 4.1) covers desensitized explosives, self-reactive materials that are thermally unstable and can undergo exothermic decomposition without participation of oxygen, and readily combustible solids.

Source: 49 CFR 173.124 (eCFR).

Previous / next UN number

UN3230Self-reactive solid type FUN3232Self-reactive solid type B, temperature controlled

Nearby Class 4.1 UN Numbers

UN3227Self-reactive liquid type EUN3228Self-reactive solid type EUN3229Self-reactive liquid type FUN3233Self-reactive liquid type C, temperature controlledUN3234Self-reactive solid type C, temperature controlledUN3235Self-reactive liquid type D, temperature controlled
View the full Class 4.1 list →

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