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 isotopes28352835Chapter 28Copy pagePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically definedDescriptionPhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically definedSubheadings283510Phosphinates (hypophosphites) and phosphonates (phosphites)283522Of mono- or disodium283524Of potassium283525Calcium hydrogenorthophosphate (‘dicalcium phosphate’)283526Other phosphates of calcium283529Other283531Sodium triphosphate (sodium tripolyphosphate)283539OtherWas this page helpful?YesNoPrevious2834Nitrites; nitratesNextCarbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate2836