| Class | Class Name |
|---|---|
| 1 | carbon black for industrial purpose |
| 1 | carbon black for industrial purposes |
| 1 | carbon compounds |
| 1 | carbon disulfide |
| 1 | carbon for filters |
| 1 | carbon tetrachloride |
| 1 | carbonates |
| 1 | carbonic acid |
| 1 | carbonic hydrates |
| 1 | casein for industrial purposes |
| 1 | casein for the food industry |
| 1 | cassiopium [lutetium] |
| 1 | casting resin |
| 1 | catalyst substrates |
| 1 | catalysts |
| 1 | catalysts for chemical processes |
| 1 | catalysts for use in polymerization processes |
| 1 | catechu |
| 1 | cationic polymers |
| 1 | caustic alkali |
| 1 | caustic soda for industrial purposes |
| 1 | caustics for industrial purposes |
| 1 | cellulose |
| 1 | cellulose derivatives [chemicals] |
| 1 | cellulose derivatives [for chemical purposes] |
| 1 | cellulose esters for industrial purposes |
| 1 | cellulose ethers for industrial purposes |
| 1 | cellulose gel (chemicals) |
| 1 | cellulose plastic resins (chemicals) |
| 1 | cellulose pulp (raw materials) |
| 1 | cement blending agents |
| 1 | cement for footwear |
| 1 | cement for mending broken articles |
| 1 | cement for pneumatic tyres |
| 1 | cement [metallurgy] |
| 1 | cement preservatives, except paints and oils |
| 1 | cementitious grouts |
| 1 | cement-waterproofing chemicals, except paints |
| 1 | ceramic compositions for sintering |
| 1 | ceramic compositions for sintering [granules and powders] |
| 1 | ceramic glazings |
| 1 | ceramic materials in particulate form, for use as filtering media |
| 1 | ceramic materials in paste and/or powder form for use in industry |
| 1 | cerium |
| 1 | chemical absorbents |
| 1 | chemical additive pastes |
| 1 | chemical additives |
| 1 | chemical additives for aiding the combustion of fuels |
| 1 | chemical additives for aquarium water |
| 1 | chemical additives for asphalts |
