| Name | CAS No. |
| Charcoal | 7440-44-0 |
| Calcium Rosinate | 9007-13-0 |
| Citrus aurantium dulcis | 8028-48-6 |
| Citronella oil | 91771-61-8 |
| Cumene | 98-82-8 |
| Chitin | 1398-61-4 |
| Cineole | 470-82-6 |
| CASSIA OIL | 8007-80-5 |
| Cyanuric chloride | 108-77-0 |
| Cerium (III) carbonate hydrate | 54451-25-1 |
| Cerium Oxide | 1306-38-3 |
| Casein | 9000-71-9 |
| Chromium(VI) oxide | 1333-82-0 |
| COBALT CARBONATE | 7542-09-8 |
| Calcium carbonate | 471-34-1 |