Hazard Class 4.1
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).
| UN Number | Proper Shipping Name | Packing Group |
|---|---|---|
| UN1309 | Aluminum powder, coated | II, III |
| UN1310 | Ammonium picrate, wetted with not less than 10 percent water, by mass | I |
| UN1312 | Borneol | III |
| UN1313 | Calcium resinate | III |
| UN1314 | Calcium resinate, fused | III |
| UN1318 | Cobalt resinate, precipitated | III |
| UN1320 | Dinitrophenol, wetted with not less than 15 percent water, by mass | I |
| UN1321 | Dinitrophenolates, wetted with not less than 15 percent water, by mass | I |
| UN1322 | Dinitroresorcinol, wetted with not less than 15 percent water, by mass | I |
| UN1323 | Ferrocerium | II |
| UN1324 | Films, nitrocellulose base, gelatine coated (except scrap) | III |
| UN1325 | Flammable solids, organic, n.o.s. | II, III |
| UN1326 | Hafnium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 microns; (b) chemically produced, particle size less than 840 microns | II |
| UN1328 | Hexamethylenetetramine | III |
| UN1330 | Manganese resinate | III |
| UN1331 | Matches, strike anywhere | III |
| UN1332 | Metaldehyde | III |
| UN1333 | Cerium, slabs, ingots, or rods | II |
| UN1334 | Naphthalene, crude or Naphthalene, refined | III |
| UN1336 | Nitroguanidine, wetted or Picrite, wetted with not less than 20 percent water, by mass | I |
| UN1337 | Nitrostarch, wetted with not less than 20 percent water, by mass | I |
| UN1338 | Phosphorus, amorphous | III |
| UN1339 | Phosphorus heptasulfide, free from yellow or white phosphorus | II |
| UN1341 | Phosphorus sesquisulfide, free from yellow or white phosphorus | II |
| UN1343 | Phosphorus trisulfide, free from yellow or white phosphorus | II |
| UN1344 | Trinitrophenol, wetted with not less than 30 percent water, by mass | I |
| UN1345 | Rubber scrap or shoddy, powdered or granulated, not exceeding 840 microns and rubber contend exceeding 45% | II |
| UN1346 | Silicon powder, amorphous | III |
| UN1347 | Silver picrate, wetted with not less than 30 percent water, by mass | I |
| UN1348 | Sodium dinitro-o-cresolate, wetted with not less than 15 percent water, by mass | I |
| UN1349 | Sodium picramate, wetted with not less than 20 percent water, by mass | I |
| UN1350 | Sulfur | III |
| UN1352 | Titanium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 microns; (b) chemically produced, particle size less than 840 microns | II |
| UN1353 | Fibers or Fabrics impregnated with weakly nitrated nitrocellulose, n.o.s | III |
| UN1354 | Trinitrobenzene, wetted with not less than 30 percent water, by mass | I |
| UN1355 | Trinitrobenzoic acid, wetted with not less than 30 percent water, by mass | I |
| UN1356 | Trinitrotoluene, wetted or TNT, wetted, with not less than 30 percent water by mass | I |
| UN1357 | Urea nitrate, wetted with not less than 20 percent water, by mass | I |
| UN1358 | Zirconium powder, wetted with not less than 25 percent water (a visible excess of water must be present) (a) mechanically produced, particle size less than 53 microns; (b) chemically produced, particle size less than 840 microns | II |
| UN1437 | Zirconium hydride | II |
| UN1517 | Zirconium picramate, wetted with not less than 20 percent water, by mass | I |
| UN1571 | Barium azide, wetted with not less than 50 percent water, by mass | I |
| UN1868 | Decaborane | II |
| UN1869 | Magnesium or Magnesium alloys with more than 50 percent magnesium in pellets, turnings or ribbons | III |
| UN1871 | Titanium hydride | II |
| UN1944 | Matches, safety (book, card or strike on box) | III |
| UN1945 | Matches, wax, Vesta | III |
| UN2000 | Celluloid, in block, rods, rolls, sheets, tubes, etc., except scrap | III |
| UN2001 | Cobalt naphthenates, powder | III |
| UN2213 | Paraformaldehyde | III |
| UN2254 | Matches, fusee | III |
| UN2304 | Naphthalene, molten | III |
| UN2448 | Sulfur, molten | III |
| UN2538 | Nitronaphthalene | III |
| UN2555 | Nitrocellulose with water with not less than 25 percent water, by mass | II |
| UN2556 | Nitrocellulose with alcohol with not less than 25 percent alcohol by mass, and with not more than 12.6 percent nitrogen, by dry mass | II |
| UN2557 | Nitrocellulose, with not more than 12.6 percent nitrogen, by dry mass mixture with or without plasticizer, with or without pigment | II |
| UN2623 | Firelighters, solid with flammable liquid | III |
| UN2687 | Dicyclohexylammonium nitrite | III |
| UN2714 | Zinc resinate | III |
| UN2715 | Aluminum resinate | III |
| UN2717 | Camphor, synthetic | III |
| UN2852 | Dipicryl sulfide, wetted with not less than 10 percent water, by mass | I |
| UN2858 | Zirconium, dry, coiled wire, finished metal sheets, strip (thinner than 254 microns but not thinner than 18 microns) | III |
| UN2878 | Titanium sponge granules or Titanium sponge powders | III |
| UN2907 | Isosorbide dinitrate mixture with not less than 60 percent lactose, mannose, starch or calcium hydrogen phosphate | II |
| UN2925 | Flammable solids, corrosive, organic, n.o.s. | II, III |
| UN2926 | Flammable solids, toxic, organic, n.o.s. | II, III |
| UN2956 | 5-tert-Butyl-2,4,6-trinitro-m-xylene or Musk xylene | III |
| UN2989 | Lead phosphite, dibasic | II, III |
| UN3089 | Metal powders, flammable, n.o.s | II, III |
| UN3097 | Flammable solid, oxidizing, n.o.s | II, III |
| UN3175 | Solids containing flammable liquid, n.o.s. | II |
| UN3176 | Flammable solid, organic, molten, n.o.s. | II, III |
| UN3178 | Flammable solid, inorganic, n.o.s. | II, III |
| UN3179 | Flammable solid, toxic, inorganic, n.o.s. | II, III |
| UN3180 | Flammable solid, corrosive, inorganic, n.o.s. | II, III |
| UN3181 | Metal salts of organic compounds, flammable, n.o.s | II, III |
| UN3182 | Metal hydrides, flammable, n.o.s | II, III |
| UN3221 | Self-reactive liquid type B | — |
| UN3222 | Self-reactive solid type B | — |
| UN3223 | Self-reactive liquid type C | — |
| UN3224 | Self-reactive solid type C | — |
| UN3225 | Self-reactive liquid type D | — |
| UN3226 | Self-reactive solid type D | — |
| UN3227 | Self-reactive liquid type E | — |
| UN3228 | Self-reactive solid type E | — |
| UN3229 | Self-reactive liquid type F | — |
| UN3230 | Self-reactive solid type F | — |
| UN3231 | Self-reactive liquid type B, temperature controlled | — |
| UN3232 | Self-reactive solid type B, temperature controlled | — |
| UN3233 | Self-reactive liquid type C, temperature controlled | — |
| UN3234 | Self-reactive solid type C, temperature controlled | — |
| UN3235 | Self-reactive liquid type D, temperature controlled | — |
| UN3236 | Self-reactive solid type D, temperature controlled | — |
| UN3237 | Self-reactive liquid type E, temperature controlled | — |
| UN3238 | Self-reactive solid type E, temperature controlled | — |
| UN3239 | Self-reactive liquid type F, temperature controlled | — |
| UN3240 | Self-reactive solid type F, temperature controlled | — |
| UN3241 | 2-Bromo-2-nitropropane-1,3-diol | III |
| UN3242 | Azodicarbonamide | II |
| UN3251 | Isosorbide-5-mononitrate | III |
| UN3270 | Nitrocellulose membrane filters, with not more than 12.6% nitrogen, by dry mass | II |
| UN3317 | 2-Amino-4,6-Dinitrophenol, wetted with not less than 20 percent water by mass | I |
| UN3319 | Nitroglycerin mixture, desensitized, solid, n.o.s. with more than 2 percent but not more than 10 percent nitroglycerin, by mass | II |
| UN3344 | Pentaerythrite tetranitrate mixture, desensitized, solid, n.o.s. or Pentaerythritol tetranitrate mixture, desensitized, solid, n.o.s. or PETN mixture, desensitized, solid, n.o.s., with more than 10 percent but not more than 20 percent PETN, by mass | II |
| UN3360 | Fibers, vegetable, dry | III |
| UN3364 | Trinitrophenol (picric acid), wetted, with not less than 10 percent water by mass | I |
| UN3365 | Trinitrochlorobenzene (picryl chloride), wetted, with not less than 10% water by mass | I |
| UN3366 | Trinitrotoluene (TNT), wetted, with not less than 10 percent water by mass | I |
| UN3367 | Trinitrobenzene, wetted, with not less than 10% water, by mass | I |
| UN3368 | Trinitrobenzoic acid, wetted with not less than 10% water by mass | I |
| UN3369 | Sodium dinitro-o-cresolate, wetted with not less than 10% water, by mass | I |
| UN3370 | Urea nitrate, wetted, with not less than 10 percent water by mass | I |
| UN3376 | 4-Nitrophenylhydrazine, with not less than 30 percent water, by mass | I |
| UN3380 | Desensitized explosive, solid, n.o.s. | I |
| UN3474 | 1-Hydroxybenzotriazole, monohydrate | I |
| UN3527 | Polyester resin kit, solid base material | — |
| UN3531 | Polymerizing substance, solid, stabilized, n.o.s. | III |
| UN3532 | Polymerizing substance, liquid, stabilized, n.o.s. | III |
| UN3533 | Polymerizing substance, solid, temperature controlled, n.o.s. | III |
| UN3534 | Polymerizing substance, liquid, temperature controlled, n.o.s. | III |
| UN3541 | Articles containing flammable solid, n.o.s. | — |
SymbioFlows identifies verified off-takers for your specific waste stream and generates a compliance-grounded recovery analysis.
Request Recovery AnalysisReviewed by our regulatory specialist within 1 business day.