| 2828.10 | 000 | Commercial calcium hypochlorite and other calcium hypochlorites |
| 28.29 | | Chlorates and perchlorates; bromates and perbromates; iodates and periodates |
| 28.29 | | Chlorates : |
| 28.30 | | Sulphides; polysulphides, whether or not chemically defined |
| 2830.10 | 000 | Sodium sulphides |
| 28.31 | | Dithionites and sulphoxylates |
| 28.32 | | Sulphites; thiosulphates |
| 2832.10 | 000 | Sodium sulphites |
| 2832.20 | 000 | Other sulphites |
| 2832.30 | 000 | Thiosulphates |
| 28.33 | | Sulphates; alums; peroxosulphates (persulphates) |
| 28.33 | | Sodium sulphates : |
| 2833.11 | 000 | Disodium sulphate |
| 2833.19 | | Other sulphates : |
| 2833.22 | 000 | Of aluminium |
| 2833.24 | 000 | Of nickel |
| 2833.30 | 000 | Alums |
| 2833.40 | 000 | Peroxosulphates (persulphates) |
| 2834.29 | | 1 Calcium nitrate and Barium nitrate |
| 2834.29 | 100 | - Calcium nitrate |
| 28.35 | | Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined |
| 2835.25 | 000 | Calcium hydrogenorthophosphate (“dicalcium phosphate”) |
| 2835.26 | 000 | Other phosphates of calcium |