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 isotopes28302830Chapter 28Copy pageSulphides; polysulphides, whether or not chemically definedDescriptionSulphides; polysulphides, whether or not chemically definedSubheadings283010Sodium sulphides283090OtherWas this page helpful?YesNoPrevious2829Chlorates and perchlorates; bromates and perbromates; iodates and periodatesNextDithionites and sulphoxylates2831