… Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated. …
Explanatory notes
… 29.04 - Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated. … sulphonic acid, its salts and perfluorooctane sulphonyl fluoride : 2904.31 ‑ - Perfluorooctane sulphonic acid …