| 2836.50 | 000 | Calcium carbonate |
| 2836.60 | 000 | Barium carbonate |
| 2836.60 | | Other |
| 2836.91 | 000 | Lithium carbonates |
| 2836.92 | 000 | Strontium carbonate |
| 2836.99 | 000 | Other |
| 28.37 | | Cyanides, cyanide oxides and complex cyanides |
| 28.37 | | Cyanides and cyanide oxides : |
| 2837.19 | 000 | Other |
| 2837.20 | 000 | Complex cyanides |
| 28.39 | | Silicates; commercial alkali metal silicates |
| 2839.11 | 000 | Sodium metasilicates |
| 2839.19 | 000 | Other |
| 2839.90 | | Other |
| 2839.90 | 090 | - Other |
| 28.40 | | Borates; peroxoborates (perborates) |
| 28.40 | | Disodium tetraborate (refined borax) : |
| 2840.19 | 000 | Other |
| 2840.20 | 000 | Other borates |
| 2840.30 | 000 | Peroxoborates (perborates) |
| 28.41 | | Salts of oxometallic or peroxometallic acids |
| 2841.30 | 000 | Sodium dichromate |
| 2841.50 | | Other chromates and dichromates; peroxochromates |