| Class | Class Name |
|---|---|
| 1 | potassium |
| 1 | potassium dioxalate |
| 1 | potato flour for industrial purposes |
| 1 | potting soil |
| 1 | power steering fluid |
| 1 | praseodymium |
| 1 | precipitated calcium carbonate for use in food, pharmaceuticals, nutritional supplements and toothpaste |
| 1 | preparations for diagnosis for scientific purposes |
| 1 | preparations for preventing the tarnishing of glass |
| 1 | preparations for preventing the tarnishing of lenses |
| 1 | preparations for separating oil, gas and petrol |
| 1 | preparations for stimulating cooking for industrial purposes |
| 1 | preparations for the purification of gas |
| 1 | preparations for the separation of greases |
| 1 | preparations of microorganisms, other than for medical and veterinary use |
| 1 | preparations of the distillation of wood alcohol |
| 1 | preparations of trace elements for plants |
| 1 | pre-sensitized plates for offset printing |
| 1 | preservatives for tiles, except paints and oils |
| 1 | preservatives for use in the pharmaceutical industry |
| 1 | promethium |
| 1 | propellant gases for aerosols |
| 1 | protactinium |
| 1 | protective gases for welding |
| 1 | protein [raw material] |
| 1 | proteins for the food industry |
| 1 | proteins for use in manufacture |
| 1 | proteins for use in the manufacture of food supplements |
| 1 | prussiates |
| 1 | purification preparations |
| 1 | pyrogallic acid |
| 1 | pyroligneous acid [wood vinegar] |
| 1 | quebracho for industrial purposes |
| 1 | radiator flushing chemicals |
| 1 | radiator-rust inhibiting additives (chemicals) |
| 1 | radioactive elements for scientific purposes |
| 1 | radium for scientific purposes |
| 1 | radon |
| 1 | rare earths |
| 1 | reagent paper, other than for medical or veterinary purposes |
| 1 | reagents and chemical compounds for scientific and laboratory use |
| 1 | reagents for scientific and medical research use |
| 1 | reagents for use in biological processing [other than for medical or veterinary purposes] |
| 1 | reducing agents for use in photography |
| 1 | refrigerant agents |
| 1 | refrigerant chemicals |
| 1 | refrigerants |
| 1 | release agent preparations (chemicals) |
| 1 | renovating preparations for phonograph records |
| 1 | resin beads (chemicals) |
