| 2810.00 | 000 | Oxides of boron; boric acids | 
| 28.11 |  | Other inorganic acids and other inorganic oxygen compounds of non-metals | 
| 28.11 |  | Other inorganic acids | 
| 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 | 
| 28.12 |  | Halides and halide oxides of non-metals | 
| 28.12 |  | Chlorides and chloride oxides | 
| 2812.11 | 000 | Carbonyl dichloride (phosgene) | 
| 2812.12 | 000 | Phosphorus oxychloride | 
| 2812.13 | 000 | Phosphorus trichloride | 
| 2812.14 | 000 | Phosphorus pentachloride |