| 2811.11 | 000 | Hydrogen fluoride (hydrofluoric acid) |
| 2811.12 | 000 | Hydrogen cyanide (hydrocyanic acid) |
| 2811.19 | | Other |
| 2811.19 | 100 | - Hydrobromic acid |
| 2811.19 | 900 | - Other |
| 2811.19 | | Other inorganic oxygen compounds of non-metals : |
| 2811.21 | 000 | Carbon dioxide |
| 2811.22 | 000 | Silicon dioxide |
| 2811.29 | | Other |
| 2811.29 | | 1 Dinitrogen tetroxide and Sulphur dioxide |
| 2811.29 | 110 | - Dinitrogen tetroxide |
| 2811.29 | 120 | - Sulphur dioxide |
| 2811.29 | 900 | 2 Other |
| 2811.29 | | III.- HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS |
