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HomeUN NumbersClass 4.2UN1431
Hazard Class 4.2Packing Group II

UN Number

UN1431

Sodium methylate

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN1431.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Sodium methylate4.2II4.2, 8A7, A19, IB5, IP2, T3, TP33, W31None21224215 kg50 kgB52
  • 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

UN1428SodiumUN1432Sodium phosphide

Nearby Class 4.2 UN Numbers

UN1384Sodium dithionite or Sodium hydrosulfiteUN1385Sodium sulfide, anhydrous or Sodium sulfide with less than 30 percent water of crystallizationUN1386Seed cake, containing vegetable oil solvent extractions and expelled seeds, with not more than 10 percent of oil and when the amount of moisture is higher than 11 percent, with not more than 20 percent of oil and moisture combinedUN1387Wool waste, wetUN1854Barium alloys, pyrophoricUN1855Calcium, pyrophoric or Calcium alloys, pyrophoricUN1856Rags, oilyUN1857Textile waste, wet
View the full Class 4.2 list →

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