| 2833.27 | 000 | Of barium |
| 2833.30 | 000 | Alums |
| 2833.40 | 000 | Peroxosulphates (persulphates) |
| 28.34 | | Nitrites; nitrates |
| 2834.10 | | Nitrates : |
| 2834.21 | 000 | Of potassium |
| 2834.29 | | 1 Calcium nitrate and Barium nitrate |
| 2834.29 | 100 | - Calcium nitrate |
| 2834.29 | 200 | - Barium nitrate |
| 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 : |
| 2835.24 | 000 | Of potassium |
| 2835.25 | 000 | Calcium hydrogenorthophosphate (“dicalcium phosphate”) |
| 2835.26 | 000 | Other phosphates of calcium |
| 2835.29 | | Polyphosphates : |
| 2835.31 | 000 | Sodium triphosphate (sodium tripolyphosphate) |
| 28.36 | | Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate |
| 2836.20 | | Disodium carbonate |
| 2836.20 | 100 | 1 Soda ash |
| 2836.30 | 000 | Sodium hydrogencarbonate (sodium bicarbonate) |
| 2836.40 | 000 | Potassium carbonates |
| 2836.50 | 000 | Calcium carbonate |
Harmonized Tariff Schedule of Japans inquiry: C
