| P0625 | Preserving (Salt for –), other than for foodstuffs | 010003 | S0181 |
| P0627 | Preserving foodstuffs (Chemical substances for –) | 010044 | C1158 |
| P0666 | Printing plates (Sensitized –) for offset | 010406 | P0576 |
| P0684 | Promethium | 010450 | P0931 |
| P0693 | Protactinium | 010451 | P0937 |
| P0697 | Protective gases for welding | 010326 | G0130 |
| P0703 | Protein [raw material] | 010452 | P0954 |
| P0710 | Prussiates | 010228 | C1649 |
| P0722 | Pulp (Paper –) | 010156 | P0183 |
| P0723 | Pulp (Wood –) | 010132 | P0185 |
| P0746 | Purification of gas (Preparations for the –) | 010275 | G0120 |
| P0747 | Purification preparations | 010254 | C0904 |
| P0748 | Purifying chemicals (Oil- –) | 010354 | P0992 |
| P0749 | Purifying chemicals (Water- –) | 010608 | P0990 |
| P0760 | Pyrogallic acid | 010453 | P0996 |
| P0761 | Pyroligneous acid [wood vinegar] | 010133 | V0240 |
| Q0005 | Quebracho for industrial purposes | 010454 | Q0009 |
| R0014 | Radioactive elements for scientific purposes | 010456 | R0027 |
| R0028 | Radium for scientific purposes | 010458 | R0042 |
| R0030 | Radon | 010457 | R0043 |
| R0065 | Rare earth metals (Salts from –) | 010162 | S0201 |
| R0066 | Rare earths | 010526 | T0206 |
| R0093 | Reagent paper | 010259 | P0114 |
| R0095 | Reagents (Chemical –) other than for medical or veterinary purposes | 010178 | R0118 |
| R0105 | Recharging accumulators (Acidulated water for –) | 010251 | E0027 |
| R0109 | Records (Renovating preparations for phonograph –) | 010246 | D0219 |
| R0113 | Reducing agents for use in photography | 010027 | A0146 |
| R0136 | Refrigerants | 010459 | F0427 |
| R0144 | Refrigerating preparations | 010459 | F0427 |
| R0177 | Removing polish (Substances for –) | 010238 | D0097 |
| R0179 | Renovating chemicals (Leather- –) | 010175 | C1577 |
| R0180 | Renovating preparations for phonograph records | 010246 | D0219 |
| R0182 | Repairing tires [tyres] (Compositions for –) | 010465 | P0637 |
| R0189 | Resins (Acrylic –), unprocessed | 010461 | A0090 |
| R0191 | Resins (Artificial –), unprocessed | 010462 | R0250 |
| R0192 | Resins (Epoxy –), unprocessed | 010274 | E0389 |
| R0196 | Resins (Synthetic –), unprocessed | 010455 | R0253 |
| R0209 | Rhenium | 010463 | R0291 |
| R0271 | Rock salt | 010331 | S0179 |
| R0289 | Roentgen films, sensitized but not exposed | 010464 | R0347 |
| R0339 | Rubber (Liquid –) | 010144 | C0197 |
| R0344 | Rubber preservatives | 010145 | C0192 |
| R0346 | Rubber solutions | 010201 | D0229 |
| R0351 | Rubidium | 010466 | R0432 |
| R0364 | Runs in stockings (Substances for preventing –) | 010105 | D0057 |
| S0002 | Saccharin | 010114 | S0014 |
| S0035 | Sal ammoniac | 010057 | A0448 |
| S0037 | Sal ammoniac spirits | 010058 | E0422 |
| S0042 | Salicylic acid | 010468 | S0062 |
| S0045 | Salpetre | 010469 | S0065 |
| S0051 | Salt for preserving, other than for foodstuffs | 010003 | S0181 |
| S0054 | Salt, raw | 010476 | S0176 |
| S0057 | Saltpeter | 010469 | S0065 |
| S0058 | Salts [chemical preparations] | 010475 | S0193 |
| S0059 | Salts [fertilisers] | 010478 | S0192 |
| S0061 | Salts for coloring [colouring] metal | 010207 | S0205 |
| S0062 | Salts for galvanic cells | 010261 | S0206 |
| S0063 | Salts for industrial purposes | 010397 | S0195 |
| S0066 | Salts from rare earth metals | 010162 | S0201 |
| S0067 | Salts of alkaline metals | 010561 | A0283 |
| S0068 | Salts of precious metals for industrial purposes | 010391 | S0202 |
| S0069 | Samarium | 010470 | S0068 |
| S0071 | Sand (Foundry –) | 010467 | S0003 |
| S0099 | Sauce for preparing tobacco | 010471 | S0092 |
| S0128 | Scale removing preparations, other than for household purposes | 010635 | D0150 |
| S0133 | Scandium | 010473 | S0116 |
| S0186 | Sea water [for industrial purposes] | 010636 | E0037 |
| S0217 | Seaweeds [fertilizers] | 010043 | A0319 |
| S0218 | Sebacic acid | 010474 | S0148 |
| S0224 | Seed preserving substances | 010480 | S0216 |
| S0228 | Selenium | 010479 | S0183 |
| S0229 | Self defence (Chemical preparations for –) | 010235 | A0178 |
| S0234 | Self-toning paper [photography] | 010090 | P0088 |
| S0240 | Sensitized cloth for photography | 010212 | T0321 |
| S0241 | Sensitized films, unexposed | 010581 | F0200 |
| S0242 | Sensitized paper | 010418 | P0115 |
| S0243 | Sensitized photographic plates | 010269 | P0574 |
| S0244 | Sensitized plates for offset printing | 010406 | P0576 |
| S0245 | Sensitizers (Photographic –) | 010436 | S0220 |
| S0246 | Separating and unsticking [ungluing] preparations | 010232 | D0029 |
| S0356 | Shoes (Cement for –) | 010170 | M0195 |
| S0433 | Silicates | 010481 | S0308 |
| S0434 | Silicon | 010483 | S0313 |
| S0437 | Silicones | 010484 | S0315 |
| S0455 | Silver nitrate | 010569 | A0689 |
| S0463 | Silver salt solutions for silvering | 010081 | S0198 |
| S0478 | Size for finishing and priming | 010202 | C1010 |
| S0480 | Sizing preparations | 010270 | E0283 |
| S0502 | Skins (Currying preparations for –) | 010216 | P0232 |
| S0503 | Skins (Dressing, except oils, for –) | 010208 | C1145 |
| WIPO Nice Classification - Class 1 8/10 | |||