Subheading 283311: Sodium Sulphates; Disodium Sulphate
Subheading 283319: Sodium Sulphates; other than Disodium Sulphate
Subheading 283321: Sulphates; of Magnesium
Subheading 283322: Sulphates; of Aluminium
Subheading 283324: Sulphates; of Nickel
Subheading 283325: Sulphates; of Copper
Subheading 283327: Sulphates; of Barium
Subheading 283329: Sulphates; N.E.C. in Item no. 2833.2
Subheading 283330: Alums
Subheading 283340: Peroxosulphates (Persulphates)