| 2833.24 | 000 | Of nickel |
| 2833.25 | 000 | Of copper |
| 2833.27 | 000 | Of barium |
| 2833.29 | | Other |
| 2833.29 | 100 | 1 Of zinc |
| 2833.29 | 900 | 2 Other |
| 2833.30 | 000 | Alums |
| 2833.40 | 000 | Peroxosulphates (persulphates) |
| 28.34 | | Nitrites; nitrates |
| 2834.10 | 000 | Nitrites |
| 2834.10 | | Nitrates : |
| 2834.21 | 000 | Of potassium |
| 2834.29 | | Other |
| 2834.29 | | 1 Calcium nitrate and Barium nitrate |
| 2834.29 | 100 | - Calcium nitrate |
| 2834.29 | 200 | - Barium nitrate |
| 2834.29 | 300 | 2 Other |
| 28.35 | | Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined |
| 2835.10 | 000 | Phosphinates (hypophosphites) and phosphonates (phosphites) |
| 2835.10 | | Phosphates : |
| 2835.22 | 000 | Of mono- or disodium |
| 2835.24 | 000 | Of potassium |
| 2835.25 | 000 | Calcium hydrogenorthophosphate (“dicalcium phosphate”) |