| 28.29 | | Chlorates and perchlorates; bromates and perbromates; iodates and periodates |
| 28.29 | | Chlorates : |
| 2829.19 | 000 | Other |
| 2829.90 | | Other |
| 2829.90 | 100 | - Bromates |
| 2829.90 | 900 | - Other |
| 28.30 | | Sulphides; polysulphides, whether or not chemically defined |
| 2830.90 | 000 | Other |
| 2831.90 | 000 | Other |
| 2832.20 | 000 | Other sulphites |
| 28.33 | | Sulphates; alums; peroxosulphates (persulphates) |
| 2833.19 | 000 | Other |
| 2833.19 | | Other sulphates : |
| 2833.25 | 000 | Of copper |
| 2833.27 | 000 | Of barium |
| 2833.29 | | Other |
| 2833.29 | 900 | 2 Other |
| 2833.40 | 000 | Peroxosulphates (persulphates) |
| 28.34 | | Nitrites; nitrates |
| 2834.10 | 000 | Nitrites |
| 2834.10 | | Nitrates : |
| 2834.29 | | Other |
| 2834.29 | | 1 Calcium nitrate and Barium nitrate |