… Halogenated, sulphonated, nitrated or nitrosated derivatives of products …
Explanatory notes
… 29.13 ‑ Halogenated, sulphonated, nitrated or nitrosated derivatives of products … These are derived from aldehydes by replacing one or more of the hydrogen atoms (other than a hydrogen in the aldehyde group (-CHO) by one or more halogens, sulpho groups (-SO 3 H), nitro groups …