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 isotopes2811281122281122Chapter 28Copy pageSilicon dioxideDescriptionOther inorganic acids and other inorganic oxygen compounds of non-metals : Other inorganic oxygen compounds of non-metals : Silicon dioxideWas this page helpful?YesNoPrevious281121Carbon dioxideNextOther281129