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 isotopes2811281129281129Chapter 28Copy pageOtherDescriptionOther inorganic acids and other inorganic oxygen compounds of non-metals : Other inorganic oxygen compounds of non-metals : OtherWas this page helpful?YesNoPrevious281122Silicon dioxideNextCarbonyl dichloride (phosgene)281211