| 2901 | | Acyclic hydrocarbons: | | | | |
| 2901.10 | | Saturated: | | | | |
| 2901.10.10 | 00 | Ethane and butane | kg | Free | | Free |
| 2901.10.30 | 00 | n-Pentane and isopentane | kg | Free | | 25% |
| 2901.10.40 | 00 | Other: | | | | |
| 2901.10.40 | 00 | Derived in whole or in part from petroleum, shale oil or natural gas | kg | Free | | 25% |
| 2901.10.50 | 00 | Other | kg | Free | | 25% |
| 2901.21.00 | 00 | Unsaturated: | | | | |
| 2901.21.00 | 00 | Ethylene | kg | Free | | Free |
| 2901.22.00 | 00 | Propene (Propylene) | kg | Free | | Free |
| 2901.23.00 | 00 | Butene (Butylene) and isomers thereof | kg | Free | | Free |
| 2901.24 | | Buta-1,3-diene and isoprene: | | | | |
| 2901.24.10 | 00 | Buta-1,3-diene | kg | Free | | Free |
| 2901.24.20 | 00 | Isoprene: | | | | |
| 2901.24.20 | 00 | Having a purity of 95 percent or more by weight | kg | Free | | 25% |
| 2901.24.50 | 00 | Other | kg | Free | | 25% |
| 2901.29 | | Other: | | | | |
| 2901.29.10 | | Derived in whole or in part from petroleum, shale oil or natural gas | | Free | | 25% |
| 2901.29.10 | 10 | Linear α-olefins (C6-C30), unmixed | kg | | | |
| 2901.29.10 | 50 | Other | kg | | | |
| 2901.29.50 | 00 | Other | kg | Free | | 25% |
