| 35250 | Pyridoxol, not put up as medicaments | |
| 35260 | Pyridoxol, put up as medicaments in measured doses or in forms or packings for retail sale | |
| 35230 | Pyrimidine | |
| 34530 | Pyrites cinders, whether or not agglomerated | |
| 16190 | Pyrites, arsenical | |
| 34530 | Pyrites, iron, roasted, whether or not agglomerated | |
| 16120 | Pyrites, iron, unroasted (incl. cupreous iron), whether or not in powder form | |
| 16310 | Pyrites, precious, unworked or simply sawn or roughly shaped, whether or not graded, not strung, mounted or set | |
| 38220 | Pyrites, precious, worked other than simply sawn or roughly shaped, whether or not graded, not strung, mounted or set | |
| 14290 | Pyrites, tin | |
| 34139 | Pyrocatechol | |
| 34170 | Pyrocatechol monoethyl ether | |
| 48342 | Pyrocatechol, photographic, put up in measured portions or for retail sale in a form ready for use | |
| 34139 | Pyrogallol | |
| 48342 | Pyrogallol, photographic, put up in measured portions or for retail sale in a form ready for use | |
| 14290 | Pyrolusite | |
| 16190 | Pyrolusite prepared for use in dry batteries | |
| 48251 | Pyrometers (incl. thermocouple pyrometers) | |
| 14290 | Pyromorphite | |
| 34310 | Pyronine | |
| 16310 | Pyrope (garnet), unworked or simply sawn or roughly shaped, whether or not graded, not strung, mounted or set | |
| 38220 | Pyrope (garnet), worked other than simply sawn or roughly shaped, whether or not graded, not strung, mounted or set | |
| 34232 | Pyrophosphoric acid | |
| 48269 | Pyroscopes | |
| 35460 | Pyrotechnic articles | |
| 88427 | Pyrotechnic products manufacturing services | |
| 14220 | Pyrrhotite, nickeliferous | |
| 34160 | Pyrrolidone | |
| 34170 | Pyruvate kinase | |
| 34140 | Pyruvic acid | |