| 2921.21 | 000 | Ethylenediamine and its salts |
| 2921.22 | 000 | Hexamethylenediamine and its salts |
| 2933.59 | 300 | 2 1,4-Diazabicyclo [2,2,2] octane (triethylenediamine) |
| 2939.49 | | Theophylline and aminophylline (theophylline-ethylenediamine) and their derivatives; salts thereof : |
