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) 28 33 26 Sulphates of zinc 28 33 26 00 Sulphates of zinc Commodity Code Description 28 33 26 00 00 Sulphates of zinc