| CAS/UN/NA-Number | Name | Hazard Class |
|---|
| p-Diazidobenzene | Forbidden |
| UN 1369 | p-Nitrosodimethylaniline | 4.2 |
| p-Xylyl diazide | Forbidden |
| UN 1263 | Paint including paint, lacquer, enamel, stain, shellac solutions, varnish, polish, liquid filler and liquid lacquer base | 3 |
| UN 3066 | Paint or Paint related material | 8 |
| UN 3470 | Paint related material corrosive, flammable (including paint thinning or reducing compound) | 8 |
| UN 1263 | Paint related material including paint thinning, drying, removing, or reducing compound | 3 |
| UN 3469 | Paint related material, flammable, corrosive (including paint thinning or reducing compound) | 3 |
| UN 3470 | Paint, corrosive, flammable (including paint, lacquer, enamel, stain, shellac, varnish, polish, liquid filler, and liquid lacquer base) | 8 |
| UN 3469 | Paint, flammable, corrosive, (including paint , lacquer, enamel, stain, shellac, varnish, polish, liquid filler and liquid lacquer base) | 3 |
| UN 1379 | Paper, unsaturated oil treated incompletely dried (including carbon paper) | 4.2 |
UN 2213
CAS 30525-89-4 | Paraformaldehyde | 4.1 |
UN 1264
CAS 123-63-7 | Paraldehyde | 3 |
| Paranitroaniline, solid, see Nitroanilines etc | |
| NA 1967 | Parathion and compressed gas mixture | 2.3 |
| Paris green, solid, see Copper acetoarsenite | |
| PCB, see Polychlorinated biphenyls | |
UN 1380
CAS 19624-22-7 | Pentaborane | 4.2 |
UN 1669
CAS 76-01-7 | Pentachloroethane | 6.1 |
UN 3155
CAS 87-86-5 | Pentachlorophenol | 6.1 |
| Pentaerythrite tetranitrate (dry) | Forbidden |
UN 3344
CAS 78-11-5 | 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 | 4.1 |
UN 0411
CAS 78-11-5 | Pentaerythrite tetranitrate or Pentaerythritol tetranitrate or PETN, with not less than 7 percent wax by mass | 1.1D |
UN 0150
CAS 78-11-5 | Pentaerythrite tetranitrate, wetted or Pentaerythritol tetranitrate, wetted, or PETN, wetted with not less than 25 percent water, by mass, or Pentaerythrite tetranitrate, or Pentaerythritol tetranitrate or PETN, desensitized with not less than 15 percent phlegmatizer by mass | 1.1D |
| Pentaerythritol tetranitrate, see Pentaerythrite tetranitrate, etc | |
| UN 3220 | Pentafluoroethane or Refrigerant gas R 125 | 2.2 |
| UN 2286 | Pentamethylheptane | 3 |
UN 2310
CAS 123-54-6 | Pentane-2,4-dione | 3 |
UN 1265
CAS 109-66-0 | Pentanes | 3 |
| Pentanitroaniline (dry) | Forbidden |
UN 1105
CAS 123-51-3 | Pentanols | 3 |
| UN 0151 | Pentolite, dry or wetted with less than 15 percent water, by mass | 1.1D |
| Pepper spray, see Aerosols, etc. or Self-defense spray, non-pressurized | |
| UN 3211 | Perchlorates, inorganic, aqueous solution, n.o.s. | 5.1 |
| UN 1481 | Perchlorates, inorganic, n.o.s. | 5.1 |
UN 1873
CAS 7601-90-3 | Perchloric acid with more than 50 percent but not more than 72 percent acid, by mass | 5.1 |
UN 1802
CAS 7601-90-3 | Perchloric acid with not more than 50 percent acid by mass | 8 |
| Perchloric acid, with more than 72 percent acid by mass | Forbidden |
| Perchloroethylene, see Tetrachloroethylene | |
UN 1670
CAS 87-90-1 | Perchloromethyl mercaptan | 6.1 |
| UN 3083 | Perchloryl fluoride | 2.3 |
| Percussion caps, see Primers, cap type | |
| UN 3154 | Perfluoro(ethyl vinyl ether) | 2.1 |
| UN 3153 | Perfluoro(methyl vinyl ether) | 2.1 |
| Perfluoro-2-butene, see Octafluorobut-2-ene | |
| UN 1266 | Perfumery products with flammable solvents | 3 |
| UN 3214 | Permanganates, inorganic, aqueous solution, n.o.s | 5.1 |
| UN 1482 | Permanganates, inorganic, n.o.s | 5.1 |
| Permeation devices for calibrating air quality monitoring equipment See § 173.175 | |
| UN 1483 | Peroxides, inorganic, n.o.s | 5.1 |
| Peroxyacetic acid, with more than 43 percent and with more than 6 percent hydrogen peroxide | Forbidden |
| UN 3216 | Persulfates, inorganic, aqueous solution, n.o.s | 5.1 |
| UN 3215 | Persulfates, inorganic, n.o.s. | 5.1 |
UN 3021
CAS 533-74-4 | Pesticides, liquid, flammable, toxic, flash point less than 23 degrees C | 3 |
UN 2903
CAS 533-74-4 | Pesticides, liquid, toxic, flammable, n.o.s. flash point not less than 23 degrees C | 6.1 |
UN 2902
CAS 533-74-4 | Pesticides, liquid, toxic, n.o.s. | 6.1 |
UN 2588
CAS 131-89-5 | Pesticides, solid, toxic, n.o.s. | 6.1 |
| PETN, see Pentaerythrite tetranitrate | |
| PETN/TNT, see Pentolite, etc | |
| Petrol, see Gasoline | |
| UN 1267 | Petroleum crude oil | 3 |
| UN 1268 | Petroleum distillates, n.o.s. or Petroleum products, n.o.s. | 3 |
| UN 1075 | Petroleum gases, liquefied or Liquefied petroleum gas | 2.1 |
| NA 1270 | Petroleum oil | 3 |
| UN 3494 | Petroleum sour crude oil, flammable, toxic | 3 |
| UN 2645 | Phenacyl bromide | 6.1 |
| UN 2311 | Phenetidines | 6.1 |
UN 2821
CAS 108-95-2 | Phenol solutions | 6.1 |
UN 2312
CAS 108-95-2 | Phenol, molten | 6.1 |
UN 1671
CAS 108-95-2 | Phenol, solid | 6.1 |
| UN 1803 | Phenolsulfonic acid, liquid | 8 |
| UN 3346 | Phenoxyacetic acid derivative pesticide, liquid, flammable, toxic flash point less than 23 degrees C | 3 |
| UN 3348 | Phenoxyacetic acid derivative pesticide, liquid, toxic | 6.1 |
| UN 3347 | Phenoxyacetic acid derivative pesticide, liquid, toxic, flammable, flash point not less than 23 degrees C | 6.1 |
| UN 3345 | Phenoxyacetic acid derivative pesticide, solid, toxic | 6.1 |
| UN 2746 | Phenyl chloroformate | 6.1 |
UN 2487
CAS 103-71-9 | Phenyl isocyanate | 6.1 |
UN 2337
CAS 108-98-5 | Phenyl mercaptan | 6.1 |
UN 2798
CAS 644-97-3 | Phenyl phosphorus dichloride | 8 |
| UN 2799 | Phenyl phosphorus thiodichloride | 8 |
| UN 3002 | Phenyl urea pesticides, liquid, toxic | 6.1 |
UN 2470
CAS 140-29-4 | Phenylacetonitrile, liquid | 6.1 |
| UN 2577 | Phenylacetyl chloride | 8 |
UN 1672
CAS 7758-01-2 | Phenylcarbylamine chloride | 6.1 |
UN 1673
CAS 106-50-3 | Phenylenediamines (o-; m-; p-;) | 6.1 |
UN 2572
CAS 100-63-0 | Phenylhydrazine | 6.1 |
UN 1674
CAS 62-38-4 | Phenylmercuric acetate | 6.1 |
UN 2026
CAS 100-56-1 | Phenylmercuric compounds, n.o.s. | 6.1 |
| UN 1894 | Phenylmercuric hydroxide | 6.1 |
UN 1895
CAS 55-68-5 | Phenylmercuric nitrate | 6.1 |
UN 1804
CAS 98-13-5 | Phenyltrichlorosilane | 8 |
UN 1076
CAS 75-44-5 | Phosgene | 2.3 |
UN 2199
CAS 7803-51-2 | Phosphine | 2.3 |
| UN 3525 | Phosphine, adsorbed | 2.3 |
UN 1805
CAS 7664-38-2 | Phosphoric acid solution | 8 |
| Phosphoric acid triethyleneimine, see Tris-(1-aziridiyl)phosphine oxide, solution | |
| UN 3453 | Phosphoric acid, solid | 8 |
| Phosphoric anhydride, see Phosphorus pentoxide | |
| UN 2834 | Phosphorous acid | 8 |
UN 1810
CAS 10025-87-3 | Phosphorous oxychloride | 6.1 |
| Phosphorus (white or red) and a chlorate, mixtures of | Forbidden |
| Phosphorus bromide, see Phosphorus tribromide | |
| Phosphorus chloride, see Phosphorus trichloride | |
| UN 1339 | Phosphorus heptasulfide, free from yellow or white phosphorus | 4.1 |
UN 1939
CAS 7789-59-5 | Phosphorus oxybromide | 8 |
UN 2576
CAS 7789-59-5 | Phosphorus oxybromide, molten | 8 |
| UN 2691 | Phosphorus pentabromide | 8 |
UN 1806
CAS 10026-13-8 | Phosphorus pentachloride | 8 |
UN 2198
CAS 7647-19-0 | Phosphorus Pentafluoride | 2.3 |
| UN 3524 | Phosphorus pentafluoride, adsorbed | 2.3 |
UN 1340
CAS 1314-80-3 | Phosphorus pentasulfide, free from yellow or white phosphorus | 4.3 |
UN 1807
CAS 1314-56-3 | Phosphorus pentoxide | 8 |
UN 1341
CAS 1314-85-8 | Phosphorus sesquisulfide, free from yellow or white phosphorus | 4.1 |
UN 1808
CAS 7758-09-0 | Phosphorus tribromide | 8 |
UN 1809
CAS 7719-12-2 | Phosphorus trichloride | 6.1 |
| UN 2578 | Phosphorus trioxide | 8 |
| UN 1343 | Phosphorus trisulfide, free from yellow or white phosphorus | 4.1 |
UN 2447
CAS 7723-14-0 | Phosphorus white, molten | 4.2 |
UN 1338
CAS 7723-14-0 | Phosphorus, amorphous | 4.1 |
UN 1381
CAS 7723-14-0 | 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 | 4.2 |
| Phosphoryl chloride, see Phosphorus oxychloride | |
UN 2214
CAS 85-44-9 | Phthalic anhydride with more than .05 percent maleic anhydride | 8 |
UN 2313
CAS 108-89-4 | Picolines | 3 |
| Picric acid, see Trinitrophenol, etc | |
| Picrite, see Nitroguanidine, etc | |
| Picryl chloride, see Trinitrochlorobenzene | |
| UN 1272 | Pine oil | 3 |
| UN 2579 | Piperazine | 8 |
UN 2401
CAS 110-89-4 | Piperidine | 8 |
| Pivaloyl chloride, see Trimethylacetyl chloride | |
| UN 3314 | Plastic molding compound in dough, sheet or extruded rope form evolving flammable vapor | 9 |
| Plastic solvent, n.o.s., see Flammable liquids, n.o.s. | |
| UN 2006 | Plastics, nitrocellulose-based, self-heating, n.o.s. | 4.2 |
| Poisonous gases, n.o.s., see Compressed or liquefied gases, flammable or toxic, n.o.s. | |
| Polyalkylamines, n.o.s., see Amines, etc | |
| Polyamines, flammable, corrosive, n.o.s. see Amines, flammable, corrosive, n.o.s | |
| Polyamines, liquid, corrosive, flammable, n.o.s. see Amines, liquid, corrosive, flammable, n.o.s | |
| Polyamines, liquid, corrosive, n.o.s. see Amines, liquid, corrosive, n.o.s | |
UN 2315
CAS 1336-36-3 | Polychlorinated biphenyls, liquid | 9 |
| UN 3432 | Polychlorinated biphenyls, solid | 9 |
| UN 3269 | Polyester resin kit, liquid base material | 3 |
| UN 3527 | Polyester resin kit, solid base material | 4.1 |
| UN 3151 | Polyhalogenated biphenyls, liquid or Halogenated monomethyldiphenyl-methanes, liquid or Polyhalogenated terphenyls, liquid | 9 |
| UN 3152 | Polyhalogenated biphenyls, solid or Halogenated monomethyldiphenyl-methanes, solid or Polyhalogenated terphenyls, solid | 9 |
| UN 2211 | Polymeric beads expandable, evolving flammable vapor | 9 |
| UN 3532 | Polymerizing substance, liquid, stabilized, n.o.s | 4.1 |
| UN 3534 | Polymerizing substance, liquid, temperature controlled, n.o.s | 4.1 |
| UN 3531 | Polymerizing substance, solid, stabilized, n.o.s | 4.1 |
| UN 3533 | Polymerizing substance, solid, temperature controlled, n.o.s | 4.1 |
UN 2257
CAS 7440-09-7 | Potassium | 4.3 |
UN 1677
CAS 7784-41-0 | Potassium arsenate | 6.1 |
UN 1678
CAS 10124-50-2 | Potassium arsenite | 6.1 |
| Potassium bisulfite solution, see Bisulfites, aqueous solutions, n.o.s. | |
| UN 1870 | Potassium borohydride | 4.3 |
UN 1484
CAS 7758-01-2 | Potassium bromate | 5.1 |
| Potassium carbonyl | Forbidden |
UN 1485
CAS 3811-04-9 | Potassium chlorate | 5.1 |
| Potassium chlorate mixed with mineral oil, see Explosive, blasting, type C | |
UN 2427
CAS 3811-04-9 | Potassium chlorate, aqueous solution | 5.1 |
| UN 1679 | Potassium cuprocyanide | 6.1 |
| UN 3413 | Potassium cyanide solution | 6.1 |
UN 1680
CAS 151-50-8 | Potassium cyanide, solid | 6.1 |
| Potassium dichloro isocyanurate or Potassium dichloro-s-triazinetrione, see Dichloroisocyanuric acid, dry or Dichloroisocyanuric acid salts etc | |
| UN 1929 | Potassium dithionite or Potassium hydrosulfite | 4.2 |
| UN 3422 | Potassium fluoride solution | 6.1 |
| UN 1812 | Potassium fluoride, solid | 6.1 |
| UN 2628 | Potassium fluoroacetate | 6.1 |
| UN 2655 | Potassium fluorosilicate | 6.1 |
| Potassium hydrate, see Potassium hydroxide, solid | |
| Potassium hydrogen fluoride solution, see Corrosive liquid, n.o.s. | |
| Potassium hydrogen fluoride, see Potassium hydrogen difluoride | |
| UN 2509 | Potassium hydrogen sulfate | 8 |
| UN 1811 | Potassium hydrogendifluoride solid | 8 |
| UN 3421 | Potassium hydrogendifluoride solution | 8 |
| Potassium hydrosulfite, see Potassium dithionite | |
| Potassium hydroxide, liquid, see Potassium hydroxide solution | |
| UN 1813 | Potassium hydroxide, solid | 8 |
| UN 1814 | Potassium hydroxide, solution | 8 |
| Potassium hypochlorite, solution, see Hypochlorite solutions, etc | |
| UN 2864 | Potassium metavanadate | 6.1 |
| UN 2033 | Potassium monoxide | 8 |
UN 1486
CAS 7757-79-1 | Potassium nitrate | 5.1 |
| UN 1487 | Potassium nitrate and sodium nitrite mixtures | 5.1 |
UN 1488
CAS 7758-09-0 | Potassium nitrite | 5.1 |
UN 1489
CAS 7778-74-7 | Potassium perchlorate | 5.1 |
UN 1490
CAS 7722-64-7 | Potassium permanganate | 5.1 |
UN 1491
CAS 17014-71-0 | Potassium peroxide | 5.1 |
| UN 1492 | Potassium persulfate | 5.1 |
| UN 2012 | Potassium phosphide | 4.3 |
| Potassium selenate, see Selenates or Selenites | |
| Potassium selenite, see Selenates or Selenites | |
| UN 1422 | Potassium sodium alloys, liquid | 4.3 |
| UN 3404 | Potassium sodium alloys, solid | 4.3 |
UN 1382
CAS 1312-73-8 | Potassium sulfide, anhydrous or Potassium sulfide with less than 30 percent water of crystallization | 4.2 |
UN 1847
CAS 1312-73-8 | Potassium sulfide, hydrated with not less than 30 percent water of crystallization | 8 |
| UN 2466 | Potassium superoxide | 5.1 |
| UN 1420 | Potassium, metal alloys, liquid | 4.3 |
| UN 3403 | Potassium, metal alloys, solid | 4.3 |
| UN 0433 | Powder cake, wetted or Powder paste, wetted with not less than 17 percent alcohol by mass | 1.1C |
| UN 0159 | Powder cake, wetted or Powder paste, wetted with not less than 25 percent water, by mass | 1.3C |
| Powder paste, see Powder cake, etc | |
| UN 0160 | Powder, smokeless | 1.1C |
| Power device, explosive, see Cartridges, power device | |
| UN 0044 | Primers, cap type | 1.4S |
| Primers, small arms, see Primers, cap type | |
| UN 0376 | Primers, tubular | 1.4S |
| UN 1210 | Printing ink, flammable or Printing ink related material (including printing ink thinning or reducing compound), flammable | 3 |
| Projectiles, illuminating, see Ammunition, illuminating, etc | |
| UN 0345 | Projectiles, inert with tracer | 1.4S |
| UN 0425 | Projectiles, inert, with tracer | 1.4G |
| UN 0435 | Projectiles, with burster or expelling charge | 1.4G |
| UN 0344 | Projectiles, with bursting charge | 1.4D |
| Propadiene mixed with methyl acetylene, see Methyl acetylene and propadiene mixtures, stabilized | |
UN 2200
CAS 463-49-0 | Propadiene, stabilized | 2.1 |
| UN 1978 | Propane, see also Petroleum gases, liquefied | 2.1 |
UN 2402
CAS 107-03-9 | Propanethiols | 3 |
| UN 0495 | Propellant, liquid | 1.3C |
| UN 0501 | Propellant, solid | 1.4C |
| UN 1275 | Propionaldehyde | 3 |
UN 1848
CAS 79-09-4 | Propionic acid with not less than 10% and less than 90% acid by mass | 8 |
| UN 3463 | Propionic acid with not less than 90% acid by mass | 8 |
UN 2496
CAS 123-62-6 | Propionic anhydride | 8 |
UN 2404
CAS 107-12-0 | Propionitrile | 3 |
| UN 1815 | Propionyl chloride | 3 |
| Propyl alcohol, see Propanol | |
| Propyl chloride see 1-Chloropropane | |
UN 1281
CAS 625-55-8 | Propyl formates | 3 |
| Propyl mercaptan, see Propanethiols | |
UN 1277
CAS 107-10-8 | Propylamine | 3 |
UN 2611
CAS 78-89-7 | Propylene chlorohydrin | 6.1 |
UN 1280
CAS 75-56-9 | Propylene oxide | 3 |
UN 1077
CAS 115-07-1 | Propylene see also Petroleum gases, liquefied | 2.1 |
| UN 2850 | Propylene tetramer | 3 |
UN 1921
CAS 75-55-8 | Propyleneimine, stabilized | 3 |
UN 1816
CAS 141-57-1 | Propyltrichlorosilane | 8 |
| Prussic acid, see Hydrogen cyanide | |
| UN 3352 | Pyrethroid pesticide, liquid toxic | 6.1 |
| UN 3350 | Pyrethroid pesticide, liquid, flammable, toxic, flash point less than 23 degrees C | 3 |
| UN 3351 | Pyrethroid pesticide, liquid, toxic, flammable, flash point not less than 23 degrees C | 6.1 |
| UN 3349 | Pyrethroid pesticide, solid, toxic | 6.1 |
UN 1282
CAS 110-86-1 | Pyridine | 3 |
| Pyridine perchlorate | Forbidden |
| UN 3194 | Pyrophoric liquid, inorganic, n.o.s | 4.2 |
| UN 2845 | Pyrophoric liquids, organic, n.o.s | 4.2 |
| UN 1383 | Pyrophoric metals, n.o.s., or Pyrophoric alloys, n.o.s | 4.2 |
| UN 3200 | Pyrophoric solid, inorganic, n.o.s | 4.2 |
| UN 2846 | Pyrophoric solids, organic, n.o.s | 4.2 |
| UN 1817 | Pyrosulfuryl chloride | 8 |
| Pyroxylin solution or solvent, see Nitrocellulose | |
UN 1922
CAS 123-75-1 | Pyrrolidine | 3 |