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HomeUN NumbersClass 4.2UN1381
Hazard Class 4.2Packing Group I

UN Number

UN1381

Phosphorus, white dry or Phosphorus, white, under water or Phosphorus white, in solution or Phosphorus, yellow dry or Phosphorus, yellow, under water or Phosphorus, yellow, in solution

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN1381.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Phosphorus, white dry or Phosphorus, white, under water or Phosphorus white, in solution or Phosphorus, yellow dry or Phosphorus, yellow, under water or Phosphorus, yellow, in solution4.2I4.2, 6.1B9, B26, N34, T9, TP3, TP31, W31None188243ForbiddenForbiddenE—
  • 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 4.2 — Spontaneously Combustible Material

See the full class list

Spontaneously combustible material (Division 4.2) includes a pyrophoric material — a liquid or solid that, even in small quantities and without an external ignition source, can ignite within five minutes after coming in contact with air — and self-heating material.

Source: 49 CFR 173.124 (eCFR).

Previous / next UN number

UN1380PentaboraneUN1382Potassium sulfide, anhydrous or Potassium sulfide with less than 30 percent water of crystallization

Nearby Class 4.2 UN Numbers

UN1376Iron oxide, spent, or Iron sponge, spent obtained from coal gas purificationUN1378Metal catalyst, wetted with a visible excess of liquidUN1379Paper, unsaturated oil treated incompletely dried (including carbon paper)UN1383Pyrophoric metals, n.o.s., or Pyrophoric alloys, n.o.sUN1384Sodium dithionite or Sodium hydrosulfiteUN1385Sodium sulfide, anhydrous or Sodium sulfide with less than 30 percent water of crystallization
View the full Class 4.2 list →

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