| 2901.24    |            | Buta-1,3-diene and isoprene | 
| 2901.24    | 010        | 1 Buta-1,3-diene | 
| 2901.24    | 020        | 2 Isoprene | 
| 2901.29    | 000        | Other | 
| 29.02      |            | Cyclic hydrocarbons. | 
| 29.02      |            | Cyclanes, cyclenes and cycloterpenes : | 
| 2902.11    | 000        | Cyclohexane | 
| 2902.19    |            | Other | 
| 2902.19    | 010        | 1 5-Ethylidene-2-norbornene | 
| 2902.19    | 090        | 2 Other | 
| 2902.20    | 000        | Benzene | 
| 2902.30    | 000        | Toluene | 
| 2902.30    |            | Xylenes : | 
| 2902.41    | 000        | o-Xylene | 
| 2902.42    | 000        | m-Xylene | 
| 2902.43    | 000        | p-Xylene | 
| 2902.44    | 000        | Mixed xylene isomers | 
| 2902.50    | 000        | Styrene | 
| 2902.60    | 000        | Ethylbenzene | 
| 2902.70    | 000        | Cumene | 
| 2902.90    | 000        | Other | 
| 29.03      |            | Halogenated derivatives of hydrocarbons. | 
| 29.03      |            | Saturated chlorinated derivatives of acyclic hydrocarbons : |