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Hazard Class 4.1

UN Number

UN3541

Articles containing flammable solid, n.o.s.

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN3541.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
GArticles containing flammable solid, n.o.s.4.1—4.1391None232232ForbiddenForbiddenB—
  • 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

UN3540Articles containing flammable liquid, n.o.s.UN3542Articles containing a substance liable to spontaneous combustion, n.o.s.

Nearby Class 4.1 UN Numbers

UN3531Polymerizing substance, solid, stabilized, n.o.s.UN3532Polymerizing substance, liquid, stabilized, n.o.s.UN3533Polymerizing substance, solid, temperature controlled, n.o.s.UN3534Polymerizing substance, liquid, temperature controlled, n.o.s.
View the full Class 4.1 list →

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