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 isotopes28112811Chapter 28Copy pageOther inorganic acids and other inorganic oxygen compounds of non-metalsDescriptionOther inorganic acids and other inorganic oxygen compounds of non-metalsSubheadings281111Hydrogen fluoride (hydrofluoric acid)281112Hydrogen cyanide (hydrocyanic acid)281119Other281121Carbon dioxide281122Silicon dioxide281129OtherWas this page helpful?YesNoPrevious2810Oxides of boron; boric acidsNextHalides and halide oxides of non-metals2812