Section 06 Products of the chemical or allied 28 Inorganic chemicals; organic or inorganic compounds of precious metals, of rare earth metals, of radioactive elements or isotopes 28 33 Sulphates; alums; peroxosulphates (persulphates) Commodity Code Description 28 33 11 Disodium sulphate 28 33 19 Other 28 33 21 Sulphates of magnesium 28 33 22 Sulphates of aluminium 28 33 23 Sulphates of chromium 28 33 24 Sulphates of nickel 28 33 25 Sulphates of copper 28 33 26 Sulphates of zinc 28 33 27 Sulphates of barium 28 33 29 Other sulphates, nes 28 33 30 Alums 28 33 40 Peroxosulphates (persulphates)
