Formula Na₂HPO₄. The anhydrous salt is a white powder, efflorescent in air, soluble in water and insoluble in alcohol, giving a weakly alkaline solution with a relative density of 1.52 and a melting point of 35.1 °C; the dodecahydrate (CAS 10039-32-4) is a white crystal stable at ambient temperature. Industry uses it as a flame retardant for textiles, wood and paper, a dye auxiliaries and mordant, a boiler water treatment agent and a ceramic glaze additive. In food it is used to make baking powder and as a quality improver, nutritional fortifier, fermentation aid, binder and emulsifying salt. Packed with an inner plastic liner and an outer woven bag, 25 kg, 50 kg or 1000 kg net per bag; store in a ventilated, dry place.
