| C0133 | Carbonic hydrates | 010357 | C0235 |
| C0134 | Carbons (Activated –) | 010025 | C0492 |
| C0182 | Casein for industrial purposes | 010591 | C0315 |
| C0224 | Cassiopium [lutetium] | 010153 | C0330 |
| C0238 | Catalysts | 010154 | C0333 |
| C0240 | Catechu | 010139 | C0049 |
| C0259 | Caustic alkali | 010038 | A0276 |
| C0261 | Caustic soda for industrial purposes | 010490 | S0398 |
| C0262 | Caustics for industrial purposes | 010489 | C0338 |
| C0272 | Cellulose | 010155 | C0357 |
| C0273 | Cellulose (Acetate of –), unprocessed | 010008 | A0043 |
| C0276 | Cellulose derivatives [chemicals] | 010592 | C0360 |
| C0277 | Cellulose esters for industrial purposes | 010590 | C0361 |
| C0279 | Cellulose ethers for industrial purposes | 010593 | C0363 |
| C0282 | Cement [metallurgy] | 010158 | C0368 |
| C0287 | Cement for boots and shoes | 010170 | M0195 |
| C0288 | Cement for mending broken articles | 010194 | C0844 |
| C0289 | Cement for pneumatic tires [tyres] | 010193 | M0198 |
| C0291 | Cement preservatives, except paints and oils | 010196 | C0837 |
| C0293 | Cement-waterproofing preparations, except paints | 010195 | C0836 |
| C0304 | Ceramic glazings | 010160 | G0219 |
| C0305 | Ceramic materials in particulate form, for use as filtering media | 010621 | C0384 |
| C0307 | Ceramics (Compositions for the manufacture of technical –) | 010631 | C0383 |
| C0311 | Cereals (By-products of the processing of –) for industrial purposes | 010460 | R0244 |
| C0314 | Cerium | 010161 | C0404 |
| C0344 | Charcoal (Animal –) | 010068 | N0077 |
| C0345 | Charcoal (Blood –) | 010168 | C0498 |
| C0346 | Charcoal (Bone –) | 010167 | C0495 |
| C0365 | Chemical elements (Fissionable –) | 010180 | C0742 |
| C0366 | Chemical intensifiers for paper | 010639 | R0212 |
| C0367 | Chemical intensifiers for rubber | 010640 | R0211 |
| C0368 | Chemical preparations for facilitating the alloying of metals | 010045 | A0347 |
| C0371 | Chemical preparations for scientific purposes [other than for medical or veterinary use] | 010177 | C0745 |
| C0373 | Chemical reagents [other than for medical or veterinary purposes] | 010178 | R0118 |
| C0375 | Chemical substances for analyses in laboratories [other than for medical or veterinary purposes] | 010181 | A0487 |
| C0376 | Chemicals (Agricultural –), except fungicides, weedkillers, herbicides, insecticides and parasiticides | 010031 | A0184 |
| C0377 | Chemicals (Industrial –) | 010176 | C0750 |
| C0378 | Chemicals for forestry, except fungicides, herbicides, insecticides and parasiticides | 010505 | S0586 |
| C0410 | Chimney cleaners, chemical | 010174 | C0655 |
| C0424 | China slip | 010370 | K0003 |
| C0433 | Chlorates | 010182 | C0764 |
| C0434 | Chlorides | 010554 | C0770 |
| C0435 | Chlorine | 010183 | C0766 |
| C0442 | Cholic acid | 010186 | C0774 |
| C0454 | Chromates | 010187 | C0779 |
| C0457 | Chrome alum | 010188 | C0783 |
| C0460 | Chrome salts | 010190 | C0786 |
| C0461 | Chromic acid | 010191 | C0787 |
| C0462 | Chromic salts | 010477 | C0788 |
| C0464 | Chromium oxide | 010189 | O0157 |
| C0506 | Cinematographic film, sensitized but not exposed | 010598 | C0848 |
| C0510 | Citric acid for industrial purposes | 010199 | C0890 |
| C0519 | Clarification preparations | 010254 | C0904 |
| C0524 | Clay (China –) | 010370 | K0003 |
| C0529 | Cleaners, chemical (Chimney –) | 010174 | C0655 |
| C0570 | Cloth (Blueprint –) | 010434 | T0289 |
| C0604 | Coal saving preparations | 010169 | C0490 |
| C0622 | Cobalt oxide for industrial purposes | 010599 | O0158 |
| C0690 | Collodion * | 010206 | C1020 |
| C0694 | Color-brightening chemicals for industrial purposes | 010570 | A0868 |
| C0704 | Coloring metal (Salts for –) | 010207 | S0205 |
| C0706 | Colour-brightening chemicals for industrial purposes | 010570 | A0868 |
| C0709 | Colouring metal (Salts for –) | 010207 | S0205 |
| C0722 | Combusting preparations [chemical additives to motor fuel] | 010001 | C1047 |
| C0737 | Compositions for the manufacture of phonograph records | 010603 | C1083 |
| C0738 | Compost | 010622 | C1084 |
| C0763 | Concrete (Agglutinants for –) | 010030 | A0168 |
| C0768 | Concrete preservatives, except paints and oils | 010117 | B0334 |
| C0769 | Concrete-aeration chemicals | 010116 | B0333 |
| C0770 | Condensation preparations (Chemical –) | 010015 | C1107 |
| C0771 | Condensation-preventing chemicals | 010138 | B0869 |
| C0843 | Cooking (Preparations for stimulating –) for industrial purposes | 010557 | C1604 |
| C0864 | Copper sulphate [vitriol] | 010225 | V0282 |
| C0903 | Corrosive preparations | 010214 | C1289 |
| C0992 | Cream of tartar, other than for pharmaceutical purposes | 010219 | C1502 |
| C0998 | Creosote for chemical purposes | 010602 | C1512 |
| C1010 | Crotonic aldehyde | 010220 | C1549 |
| C1023 | Cryogenic preparations | 010221 | C1556 |
| C1034 | Cultures of microorganisms other than for medical and veterinary use | 010596 | C1627 |
| C1046 | Curium | 010226 | C1639 |
| C1055 | Currying preparations for leather | 010215 | C1291 |
| C1056 | Currying preparations for skins | 010216 | P0232 |
| C1095 | Cyanides [prussiates] | 010228 | C1649 |
| C1096 | Cyanotyping (Solutions for –) | 010227 | C1648 |
| C1121 | Cymene | 010230 | C1683 |
| D0003 | Damp proofing preparations, except paints, for masonry | 010617 | H0175 |
| D0025 | Decarbonising engines (Chemical preparations for –) | 010089 | D0014 |
| D0028 | Decolorants for industrial purposes | 010580 | D0031 |
| D0036 | Defoliants | 010236 | D0046 |
| D0041 | Degreasing preparations for use in manufacturing processes | 010231 | D0051 |
| WIPO Nice Classification - Class 1 3/10 | |||