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HomeUN NumbersClass 9UN1931
Hazard Class 9Packing Group III

UN Number

UN1931

Zinc dithionite or Zinc hydrosulfite

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN1931.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Zinc dithionite or Zinc hydrosulfite9IIINoneIB8, IP3, T1, TP33155204240100 kg200 kgA13, 26, 123
  • 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).

Class 9 — Miscellaneous Hazardous Material

See the full class list

Miscellaneous hazardous material (Class 9) is a material which presents a hazard during transportation but which does not meet the definition of any other hazard class, including elevated temperature materials, hazardous substances, hazardous wastes, and marine pollutants.

Source: 49 CFR 173.140 (eCFR).

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