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Harmonized System
Section VI > Chapter 29 > Heading 2904 > 2904.10
Derivatives containing only sulpho groups, their salts and ethyl esters
Section VI > Chapter 29 > Heading 2904 > 2904.20
Derivatives containing only nitro or only nitroso groups
Section VI > Chapter 29 > Heading 2904 > 2904.3 > 2904.31
Perfluorooctane sulphonic acid
Section VI > Chapter 29 > Heading 2904 > 2904.3 > 2904.32
Ammonium perfluorooctane sulphonate
Section VI > Chapter 29 > Heading 2904 > 2904.3 > 2904.33
Lithium perfluorooctane sulphonate
Section VI > Chapter 29 > Heading 2904 > 2904.3 > 2904.34
Potassium perfluorooctane sulphonate
Section VI > Chapter 29 > Heading 2904 > 2904.3 > 2904.35
Other salts of perfluorooctane sulphonic acid
Section VI > Chapter 29 > Heading 2904 > 2904.3 > 2904.36
Perfluorooctane sulphonyl fluoride
Section VI > Chapter 29 > Heading 2904 > 2904.9 > 2904.91
Trichloronitromethane (chloropicrin)