HS CodesVI · Products of the chemical or allied industries28 · Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes28332833Chapter 28Copy pageSulphates; alums; peroxosulphates (persulphates)DescriptionSulphates; alums; peroxosulphates (persulphates)Subheadings283311Disodium sulphate283319Other283321Of magnesium283322Of aluminium283324Of nickel283325Of copper283327Of barium283329Other283330Alums283340Peroxosulphates (persulphates)Was this page helpful?YesNoPrevious2832Sulphites; thiosulphatesNextNitrites; nitrates2834