1 White powder. 2 have factory 3 Soluble in water, insoluble in alcohol 4 Water treatment agents Anhydrous Disodium phosphateChemical formula Na2HPO4Molecular weight 141.98Properties White powder,specific gravity is 1.52 . Soluble in water, insoluble in alcohol, the solution is alkalescent., PH value of 1% solution is 9.1, and it'll decompose into sodium pyrophosphate at 250 °C.Application Used ...