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

2904 (01/1988-..) Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated 29041000 (01/1988-..) Derivatives of hydrocarbons containing only sulpho groups, their salts and ethyl esters 29042000 (01/1999-..) Derivatives of hydrocarbons containing only nitro or nitroso groups 29042010 (01/1988-12/1998) Trinitrotoluenes and dinitronaphthalenes 29042090 (01/1988-12/1998) Derivatives of hydrocarbons containing only nitro or nitroso groups (excl. trinitrotoluenes and dinitronaphthalenes) 29043100 (01/2017-..) Perfluorooctane sulphonic acid 29043200 (01/2017-..) Ammonium perfluorooctane sulphonate 29043300 (01/2017-..) Lithium perfluorooctane sulphonate 29043400 (01/2017-..) Potassium perfluorooctane sulphonate 29043500 (01/2017-..) Salts of perfluorooctane sulphonic acid (excl. ammonium, lithium and potassium perfluorooctane sulphonates) 29043600 (01/2017-..) Perfluorooctane sulphonyl fluoride 29049010 (01/1988-12/1995) Sulphohalogenated derivatives of hydrocarbons 29049020 (01/1996-12/2008) Sulphohalogenated derivatives of hydrocarbons (excl. esters of glycerol formed with acid-function compounds) 29049040 (01/1998-12/2016) Trichloronitromethane `chloropicrin` 29049080 (01/1996-12/1997) Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated (excl. those containing only sulpho, nitro or nitroso groups and sulphohalogenated derivatives and esters of glycerol formed with acid-function compounds) 29049085 (01/1998-12/2008) Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated (excl. those containing only sulpho, nitro or nitroso groups, and sulphohalogenated derivatives, trichloronitromethane `chloropicrin` and esters of glycerol formed with acid-function compounds) 29049090 (01/1988-12/1995) Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated (excl. those containing only sulpho, nitro or nitroso groups and sulphohalogenated derivatives) 29049095 (01/2009-12/2016) Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated (excl. those containing only sulpho, nitro or nitroso groups, trichloronitromethane `chloropicrin` and esters of glycerol formed with acid-function compounds) 29049100 (01/2017-..) Trichloronitromethane `chloropicrin` 29049900 (01/2017-..) Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated (excl. those containing only sulpho, nitro or nitroso groups, trichloronitromethane `chloropicrin`, perfluorooctane sulphonic acid and its salts, perfluorooctane sulphonyl fluoride and esters of glycerol formed with acid-function compounds)