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 isotopes2833283325283325Chapter 28Copy pageOf copperDescriptionSulphates; alums; peroxosulphates (persulphates) : Other sulphates : Of copperWas this page helpful?YesNoPrevious283324Of nickelNextOf barium283327