| 2912.11.00 | -- Methanal (formaldehyde) | |
| 2912.12.00 | -- Ethanal (acetaldehyde) | |
| 2912.19.00 | -- Other | |
| 2912.21.00 | -- Benzaldehyde | |
| 2912.29.00 | -- Other | |
| 2912.41.00 | -- Vanillin (4-hydroxy-3-methoxy-benzaldehyde) | |
| 2912.42.00 | -- Ethylvanillin (3-ethoxy-4-hydroxybenzaldehyde) | |
| 2912.49.00 | -- Other | |
| 2912.50.00 | - Cyclic polymers of aldehydes | |
| 2912.60.00 | - Paraformaldehyde |