Hazard Class 4.2
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).
| UN Number | Proper Shipping Name | Packing Group |
|---|---|---|
| UN1361 | Carbon, animal or vegetable origin | II, III |
| UN1362 | Carbon, activated | III |
| UN1363 | Copra | III |
| UN1364 | Cotton waste, oily | III |
| UN1365 | Cotton, wet | III |
| UN1369 | p-Nitrosodimethylaniline | II |
| UN1372 | Fibers, animal or Fibers, vegetable burnt, wet or damp | III |
| UN1373 | Fibers or Fabrics, animal or vegetable or Synthetic, n.o.s. with animal or vegetable oil | III |
| UN1374 | Fish meal, unstablized or Fish scrap, unstabilized | II |
| UN1376 | Iron oxide, spent, or Iron sponge, spent obtained from coal gas purification | III |
| UN1378 | Metal catalyst, wetted with a visible excess of liquid | II |
| UN1379 | Paper, unsaturated oil treated incompletely dried (including carbon paper) | III |
| UN1380 | Pentaborane | I |
| 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 | I |
| UN1382 | Potassium sulfide, anhydrous or Potassium sulfide with less than 30 percent water of crystallization | II |
| UN1383 | Pyrophoric metals, n.o.s., or Pyrophoric alloys, n.o.s | I |
| UN1384 | Sodium dithionite or Sodium hydrosulfite | II |
| UN1385 | Sodium sulfide, anhydrous or Sodium sulfide with less than 30 percent water of crystallization | II |
| UN1386 | Seed 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 combined | III |
| UN1387 | Wool waste, wet | III |
| UN1431 | Sodium methylate | II |
| UN1854 | Barium alloys, pyrophoric | I |
| UN1855 | Calcium, pyrophoric or Calcium alloys, pyrophoric | I |
| UN1856 | Rags, oily | III |
| UN1857 | Textile waste, wet | III |
| UN1923 | Calcium dithionite or Calcium hydrosulfite | II |
| UN1929 | Potassium dithionite or Potassium hydrosulfite | II |
| UN1932 | Zirconium scrap | III |
| UN2002 | Celluloid, scrap | III |
| UN2004 | Magnesium diamide | II |
| UN2006 | Plastics, nitrocellulose-based, self-heating, n.o.s. | III |
| UN2008 | Zirconium powder, dry | I, II, III |
| UN2009 | Zirconium, dry, finished sheets, strip or coiled wire | III |
| UN2210 | Maneb or Maneb preparations with not less than 60 percent maneb | III |
| UN2217 | Seed cake with not more than 1.5 percent oil and not more than 11 percent moisture | III |
| UN2318 | Sodium hydrosulfide, with less than 25 percent water of crystallization | II |
| UN2441 | Titanium trichloride, pyrophoric or Titanium trichloride mixtures, pyrophoric | I |
| UN2447 | Phosphorus white, molten | I |
| UN2545 | Hafnium powder, dry | I, II, III |
| UN2546 | Titanium powder, dry | I, II, III |
| UN2793 | Ferrous metal borings or Ferrous metal shavings or Ferrous metal turnings or Ferrous metal cuttings in a form liable to self-heating | III |
| UN2845 | Pyrophoric liquids, organic, n.o.s | I |
| UN2846 | Pyrophoric solids, organic, n.o.s | I |
| UN2870 | Aluminum borohydride or Aluminum borohydride in devices | I |
| UN2881 | Metal catalyst, dry | I, II, III |
| UN2940 | 9-Phosphabicyclononanes or Cyclooctadiene phosphines | II |
| UN3088 | Self-heating solid, organic, n.o.s | II, III |
| UN3126 | Self-heating solid, corrosive, organic, n.o.s | II, III |
| UN3127 | Self-heating solid, oxidizing, n.o.s. | — |
| UN3128 | Self-heating solid, toxic, organic, n.o.s | II, III |
| UN3174 | Titanium disulphide | III |
| UN3183 | Self-heating liquid, organic, n.o.s | II, III |
| UN3184 | Self-heating liquid, toxic, organic, n.o.s | II, III |
| UN3185 | Self-heating liquid, corrosive, organic, n.o.s | II, III |
| UN3186 | Self-heating liquid, inorganic, n.o.s | II, III |
| UN3187 | Self-heating liquid, toxic, inorganic, n.o.s | II, III |
| UN3188 | Self-heating liquid, corrosive, inorganic, n.o.s | II, III |
| UN3189 | Metal powder, self-heating, n.o.s | II, III |
| UN3190 | Self-heating solid, inorganic, n.o.s | II, III |
| UN3191 | Self-heating solid, toxic, inorganic, n.o.s. | II, III |
| UN3192 | Self-heating solid, corrosive, inorganic, n.o.s. | II, III |
| UN3194 | Pyrophoric liquid, inorganic, n.o.s | I |
| UN3200 | Pyrophoric solid, inorganic, n.o.s | I |
| UN3205 | Alkaline earth metal alcoholates, n.o.s | II, III |
| UN3206 | Alkali metal alcoholates, self-heating, corrosive, n.o.s. | II, III |
| UN3254 | Tributylphosphane | I |
| UN3255 | tert-Butyl hypochlorite | I |
| UN3313 | Organic pigments, self-heating | II, III |
| UN3341 | Thiourea dioxide | II, III |
| UN3342 | Xanthates | II, III |
| UN3391 | Organometallic substance, solid, pyrophoric | I |
| UN3392 | Organometallic substance, liquid, pyrophoric | I |
| UN3393 | Organometallic substance, solid, pyrophoric, water-reactive | I |
| UN3394 | Organometallic substance, liquid, pyrophoric, water-reactive | I |
| UN3400 | Organometallic substance, solid, self-heating | II, III |
| UN3497 | Krill meal | II, III |
| UN3542 | Articles containing a substance liable to spontaneous combustion, n.o.s. | — |
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