2904 Sulphonated, nitrated or nitrosated derivatives of hydrocarbons; whether or not halogenated

2904.10 Derivatives of hydrocarbons; containing only sulpho groups, their salts and ethyl esters, whether or not halogenated

• 2904.10.00 Derivatives containing only sulpho groups, their salts and ethyl estersFree

2904.20 Derivatives of hydrocarbons; containing only nitro or only nitroso groups, whether or not halogenated

• 2904.20.00 Derivatives containing only nitro or only nitroso groupsFree

2904.31 Derivatives of hydrocarbons; perfluorooctane sulphonic acid, whether or not halogenated

• 2904.31.00 Perfluorooctane sulphonic acidFree

2904.32 Derivatives of hydrocarbons; ammonium perfluorooctane sulphonate, whether or not halogenated

• 2904.32.00 Ammonium perfluorooctane sulphonateFree

2904.33 Derivatives of hydrocarbons; lithium perfluorooctane sulphonate, whether or not halogenated

• 2904.33.00 Lithium perfluorooctane sulphonateFree

2904.34 Derivatives of hydrocarbons; potassium perfluorooctane sulphonate, whether or not halogenated

• 2904.34.00 Potassium perfluorooctane sulphonateFree

2904.35 Derivatives of hydrocarbons; salts of perfluorooctane sulphonic acid n.e.c in heading no. 2904, whether or not halogenated

• 2904.35.00 Other salts of perfluorooctane sulphonic acidFree

2904.36 Derivatives of hydrocarbons; perfluorooctane sulphonyl fluoride, whether or not halogenated

• 2904.36.00 Perfluorooctane sulphonyl fluorideFree

2904.91 Derivatives of hydrocarbons; trichloronitromethane (chloropicrin), whether or not halogenated

• 2904.91.00 Trichloronitromethane (chloropicrin)Free

2904.99 Derivatives of hydrocarbons n.e.c. in heading no. 2904, whether or not halogenated

• 2904.99.00 OtherFree