From Chapter 29: Chapter 29
| HTS Code | Description | General Duty |
|---|---|---|
| 2901101000 | Saturated Ethane and butane | Free |
| 2901103000 | Saturated n-Pentane and isopentane | Free |
| 2901104000 | Other Derived in whole or in part from petroleum, shale oil or natural gas | Free |
| 2901105000 | Other Other | Free |
| 2901210000 | Unsaturated Ethylene | Free |
| 2901220000 | Unsaturated Propene (Propylene) | Free |
| 2901230000 | Unsaturated Butene (Butylene) and isomers thereof | Free |
| 2901241000 | Buta-1,3-diene and isoprene Buta-1,3-diene | Free |
| 2901242000 | Isoprene Having a purity of 95 percent or more by weight | Free |
| 2901245000 | Isoprene Other | Free |
| 2901291000 | Other Derived in whole or in part from petroleum, shale oil or natural gas | Free |
| 2901291010 | Derived in whole or in part from petroleum, shale oil or natural gas Linear α-olefins (C6-C30), unmixed | Free |
| 2901291050 | Derived in whole or in part from petroleum, shale oil or natural gas Other | Free |
| 2901295000 | Other Other | Free |