Class 4.1 covers readily combustible solids and solids that may cause fire through friction, self-reactive substances liable to strongly exothermic decomposition, polymerizing substances, and solid desensitized explosives. Some self-reactive and polymerizing substances must be carried under temperature control.
The list below gives every UN number that ADR 2025 Table A (Chapter 3.2) assigns to Class 4.1, with its proper shipping name and packing groups. A UN number with more than one row in Table A (for example one row per packing group or per physical state) is listed once and marked with its row count; its page shows every row. Open a UN number for its classification code, labels, tunnel restriction code, transport category, limited and excepted quantities and the 1.1.3.6 exemption points. The class of a substance is assigned under ADR Part 2 (Chapter 2.2.41); this list helps you find an entry, it does not classify a product.
Entries marked “not subject to ADR” are listed in Table A but carried outside ADR under the conditions their special provision sets; entries marked “carriage prohibited” may not be carried at all.
Class 4.1 UN numbers (124)
- UN 1309ALUMINIUM POWDER, COATEDPG II, III · 2 rows
- UN 1310AMMONIUM PICRATE, WETTED with not less than 10 % water, by massPG I
- UN 1312BORNEOLPG III
- UN 1313CALCIUM RESINATEPG III
- UN 1314CALCIUM RESINATE, FUSEDPG III
- UN 1318COBALT RESINATE, PRECIPITATEDPG III
- UN 1320DINITROPHENOL, WETTED with not less than 15 % water, by massPG I
- UN 1321DINITROPHENOLATES, WETTED with not less than 15 % water, by massPG I
- UN 1322DINITRORESORCINOL, WETTED with not less than 15 % water, by massPG I
- UN 1323FERROCERIUMPG II
- UN 1324FILMS, NITROCELLULOSE BASE, gelatin coated, except scrapPG III
- UN 1325FLAMMABLE SOLID, ORGANIC, N.O.S.PG II, III · 2 rows
- UN 1326HAFNIUM POWDER, WETTED with not less than 25 % waterPG II
- UN 1327Hay, Straw or Bhusanot subject to ADR
- UN 1328HEXAMETHYLENETE-TRAMINEPG III
- UN 1330MANGANESE RESINATEPG III
- UN 1331MATCHES, 'STRIKE ANYWHERE'PG III
- UN 1332METALDEHYDEPG III
- UN 1333CERIUM, slabs, ingots or rodsPG II
- UN 1334NAPHTHALENE, CRUDE or NAPHTHALENE, REFINEDPG III
- UN 1336NITROGUANIDINE (PICRITE), WETTED with not less than 20 % water, by massPG I
- UN 1337NITROSTARCH, WETTED with not less than 20 % water, by massPG I
- UN 1338PHOSPHORUS, AMORPHOUSPG III
- UN 1339PHOSPHORUS HEPTASULPHIDE, free from yellow and white phosphorusPG II
- UN 1341PHOSPHORUS SESQUISULPHIDE, free from yellow and white phosphorusPG II
- UN 1343PHOSPHORUS TRISULPHIDE, free from yellow and white phosphorusPG II
- UN 1344TRINITROPHENOL (PICRIC ACID), WETTED with not less than 30 % water, by massPG I
- UN 1345RUBBER SCRAP or RUBBER SHODDY, powdered or granulated, not exceeding 840 microns and rubber content exceeding 45 %PG II
- UN 1346SILICON POWDER, AMORPHOUSPG III
- UN 1347SILVER PICRATE, WETTED with not less than 30 % water, by massPG I
- UN 1348SODIUM DINITRO-o-CRESOLATE, WETTED with not less than 15 % water, by massPG I
- UN 1349SODIUM PICRAMATE, WETTED with not less than 20 % water, by massPG I
- UN 1350SULPHURPG III
- UN 1352TITANIUM POWDER, WETTED with not less than 25 % waterPG II
- UN 1353FIBRES or FABRICS IMPREGNATED WITH WEAKLY NITRATED NITROCELLULOSE, N.O.S.PG III
- UN 1354TRINITROBENZENE, WETTED with not less than 30 % water, by massPG I
- UN 1355TRINITROBENZOIC ACID, WETTED with not less than 30 % water, by massPG I
- UN 1356TRINITROTOLUENE (TNT), WETTED with not less than 30 % water, by massPG I
- UN 1357UREA NITRATE, WETTED with not less than 20 % water, by massPG I
- UN 1358ZIRCONIUM POWDER, WETTED with not less than 25 % waterPG II
- UN 1437ZIRCONIUM HYDRIDEPG II
- UN 1517ZIRCONIUM PICRAMATE, WETTED with not less than 20 % water, by massPG I
- UN 1571BARIUM AZIDE, WETTED with not less than 50 % water, by massPG I
- UN 1868DECABORANEPG II
- UN 1869MAGNESIUM or MAGNESIUM ALLOYS with more than 50 % magnesium in pellets, turnings or ribbonsPG III
- UN 1871TITANIUM HYDRIDEPG II
- UN 1944MATCHES, SAFETY (book, card or strike on box)PG III
- UN 1945MATCHES, WAX 'VESTA'PG III
- UN 2000CELLULOID in block, rods, rolls, sheets, tubes, etc., except scrapPG III
- UN 2001COBALT NAPHTHENATES, POWDERPG III
- UN 2213PARAFORMALDEHYDEPG III
- UN 2254MATCHES, FUSEEPG III
- UN 2304NAPHTHALENE, MOLTENPG III
- UN 2448SULPHUR, MOLTENPG III
- UN 2538NITRONAPHTHALENEPG III
- UN 2555NITROCELLULOSE WITH WATER (not less than 25 % water, by mass)PG II
- UN 2556NITROCELLULOSE WITH ALCOHOL (not less than 25 % alcohol, by mass, and not more than 12.6 % nitrogen, by dry mass)PG II
- UN 2557NITROCELLULOSE, with not more than 12.6 % nitrogen, by dry mass, MIXTURE WITH or WITHOUT PLASTICIZER, WITH or WITHOUT PIGMENTPG II
- UN 2623FIRELIGHTERS, SOLID with flammable liquidPG III
- UN 2687DICYCLOHEXYL-AMMONIUM NITRITEPG III
- UN 2714ZINC RESINATEPG III
- UN 2715ALUMINIUM RESINATEPG III
- UN 2717CAMPHOR, syntheticPG III
- UN 2852DIPICRYL SULPHIDE, WETTED with not less than 10 % water, by massPG I
- UN 2858ZIRCONIUM, DRY, coiled wire, finished metal sheets, strip (thinner than 254 microns but not thinner than 18 microns)PG III
- UN 2878TITANIUM SPONGE GRANULES or TITANIUM SPONGE POWDERSPG III
- UN 2907ISOSORBIDE DINITRATE MIXTURE with not less than 60 % lactose, mannose, starch or calcium hydrogen phosphatePG II
- UN 2925FLAMMABLE SOLID, CORROSIVE, ORGANIC, N.O.S.PG II, III · 2 rows
- UN 2926FLAMMABLE SOLID, TOXIC, ORGANIC, N.O.S.PG II, III · 2 rows
- UN 29565-tert-BUTYL-2,4,6-TRINITRO-m-XYLENE (MUSK XYLENE)PG III
- UN 2989LEAD PHOSPHITE, DIBASICPG II, III · 2 rows
- UN 3089METAL POWDER, FLAMMABLE, N.O.S.PG II, III · 2 rows
- UN 3097FLAMMABLE SOLID, OXIDIZING, N.O.S.carriage prohibited
- UN 3175SOLIDS or mixtures of solids (such as preparations and wastes) CONTAINING FLAMMABLE LIQUID, N.O.S. having a flash-point up to 60 °CPG II
- UN 3176FLAMMABLE SOLID, ORGANIC, MOLTEN, N.O.S.PG II, III · 2 rows
- UN 3178FLAMMABLE SOLID, INORGANIC, N.O.S.PG II, III · 2 rows
- UN 3179FLAMMABLE SOLID, TOXIC, INORGANIC, N.O.S.PG II, III · 2 rows
- UN 3180FLAMMABLE SOLID, CORROSIVE, INORGANIC, N.O.S.PG II, III · 2 rows
- UN 3181METAL SALTS OF ORGANIC COMPOUNDS, FLAMMABLE, N.O.S.PG II, III · 2 rows
- UN 3182METAL HYDRIDES, FLAMMABLE, N.O.S.PG II, III · 2 rows
- UN 3221SELF-REACTIVE LIQUID TYPE B
- UN 3222SELF-REACTIVE SOLID TYPE B
- UN 3223SELF-REACTIVE LIQUID TYPE C
- UN 3224SELF-REACTIVE SOLID TYPE C
- UN 3225SELF-REACTIVE LIQUID TYPE D
- UN 3226SELF-REACTIVE SOLID TYPE D
- UN 3227SELF-REACTIVE LIQUID TYPE E
- UN 3228SELF-REACTIVE SOLID TYPE E
- UN 3229SELF-REACTIVE LIQUID TYPE F
- UN 3230SELF-REACTIVE SOLID TYPE F
- UN 3231SELF-REACTIVE LIQUID TYPE B, TEMPERATURE CONTROLLED
- UN 3232SELF-REACTIVE SOLID TYPE B, TEMPERATURE CONTROLLED
- UN 3233SELF-REACTIVE LIQUID TYPE C, TEMPERATURE CONTROLLED
- UN 3234SELF-REACTIVE SOLID TYPE C, TEMPERATURE CONTROLLED
- UN 3235SELF-REACTIVE LIQUID TYPE D, TEMPERATURE CONTROLLED
- UN 3236SELF-REACTIVE SOLID TYPE D, TEMPERATURE CONTROLLED
- UN 3237SELF-REACTIVE LIQUID TYPE E, TEMPERATURE CONTROLLED
- UN 3238SELF-REACTIVE SOLID TYPE E, TEMPERATURE CONTROLLED
- UN 3239SELF-REACTIVE LIQUID TYPE F, TEMPERATURE CONTROLLED
- UN 3240SELF-REACTIVE SOLID TYPE F, TEMPERATURE CONTROLLED
- UN 32412-BROMO-2-NITROPROPANE-1,3-DIOLPG III
- UN 3242AZODICARBONAMIDEPG II
- UN 3251ISOSORBIDE-5-MONONITRATEPG III
- UN 3270NITROCELLULOSE MEMBRANE FILTERS, with not more than 12.6 % nitrogen, by dry massPG II
- UN 33172-AMINO-4,6-DINITROPHENOL, WETTED with not less than 20 % water, by massPG I
- UN 3319NITROGLYCERIN MIXTURE, DESENSITIZED, SOLID, N.O.S. with more than 2 % but not more than 10 % nitroglycerin, by massPG II
- UN 3344PENTAERYTHRITE TETRANITRATE (PENTAERYTHRITOL TETRANITRATE; PETN) MIXTURE, DESENSITIZED, SOLID, N.O.S. with more than 10 % but not more than 20 % PETN, by massPG II
- UN 3360Fibres, vegetable, drynot subject to ADR
- UN 3364TRINITROPHENOL (PICRIC ACID), WETTED with not less than 10 % water, by massPG I
- UN 3365TRINITROCHLOROBENZENE (PICRYL CHLORIDE), WETTED with not less than 10 % water, by massPG I
- UN 3366TRINITROTOLUENE (TNT), WETTED with not less than 10 % water, by massPG I
- UN 3367TRINITROBENZENE, WETTED with not less than 10 % water, by massPG I
- UN 3368TRINITROBENZOIC ACID, WETTED with not less than 10 % water, by massPG I
- UN 3369SODIUM DINITRO-o-CRESOLATE, WETTED with not less than 10 % water, by massPG I
- UN 3370UREA NITRATE, WETTED with not less than 10 % water, by massPG I
- UN 33764-NITROPHENYL-HYDRAZINE, with not less than 30 % water, by massPG I
- UN 3380DESENSITIZED EXPLOSIVE, SOLID, N.O.S.PG I
- UN 34741‑HYDROXYBENZOTRIAZOLE MONOHYDRATEPG I
- UN 3527POLYESTER RESIN KIT, solid base materialPG II, III · 2 rows
- UN 3531POLYMERIZING SUBSTANCE, SOLID, STABILIZED, N.O.S.PG III
- UN 3532POLYMERIZING SUBSTANCE, LIQUID, STABILIZED, N.O.S.PG III
- UN 3533POLYMERIZING SUBSTANCE, SOLID, TEMPERATURE CONTROLLED, N.O.S.PG III
- UN 3534POLYMERIZING SUBSTANCE, LIQUID, TEMPERATURE CONTROLLED, N.O.S.PG III
- UN 3541ARTICLES CONTAINING FLAMMABLE SOLID, N.O.S.
Other ADR classes
Class 1 · ExplosivesClass 2 · GasesClass 3 · Flammable LiquidsClass 4.2 · Spontaneously CombustibleClass 4.3 · Dangerous When WetClass 5.1 · Oxidizing SubstancesClass 5.2 · Organic PeroxidesClass 6.1 · Toxic SubstancesClass 6.2 · Infectious SubstancesClass 7 · Radioactive MaterialClass 8 · Corrosive SubstancesClass 9 · Miscellaneous