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 isotopes2833283329283329Chapter 28Copy pageOtherDescriptionSulphates; alums; peroxosulphates (persulphates) : Other sulphates : OtherWas this page helpful?YesNoPrevious283327Of bariumNextAlums283330