| 290211 | 290211 - Cyclic hydrocarbons; cyclohexane |
| 290219 | 290219 - Cyclic hydrocarbons; cyclanes, cyclenes and cycloterpenes, ex |
| 290220 | 290220 - Cyclic hydrocarbons; benzene |
| 290230 | 290230 - Cyclic hydrocarbons; toluene |
| 290241 | 290241 - Cyclic hydrocarbons; o-xylene |
| 290242 | 290242 - Cyclic hydrocarbons; m-xylene |
| 290243 | 290243 - Cyclic hydrocarbons; p-xylene |
| 290244 | 290244 - Cyclic hydrocarbons; mixed xylene isomers |
| 290250 | 290250 - Cyclic hydrocarbons; styrene |
| 290260 | 290260 - Cyclic hydrocarbons; ethylbenzene |
| 290270 | 290270 - Cyclic hydrocarbons; cumene |
| 290290 | 290290 - Cyclic hydrocarbons; n.e.c. in heading no. 2902 |