Section VI — Products of the chemical or allied industries
Subheading
283539
Other
Common commodities
Sodium hexametaphosphate crystalsTetrasodium pyrophosphate powderSodium acid pyrophosphate granulesPotassium pyrophosphate solidsGraham's salt for water treatmentCalgon water softenerBoiler water treatment with SHMPIndustrial boiler water conditionerPowdered sodium acid pyrophosphateSodium hexametaphosphate for detergents