| 2814 | | Ammonia, anhydrous or in aqueous solution: | | | | |
| 2814.10.00 | 00 | Anhydrous ammonia | t | Free | | Free |
| 2814.20.00 | 00 | Ammonia in aqueous solution | t NH3 t | Free | | Free |
| 3102.80.00 | 00 | Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution | t | Free | | Free |
| 8414.30.80 | 30 | For all refrigerants except ammonia: | | | | |
| 8414.30.80 | 90 | For ammonia | No. | | | |
