Odourless, colourless crystals or white granular or crystalline powder Odourless, colourless crystals or white granular or crystalline powder1,Formula: Na2HPO4; Na2HPO4·nH2O (n = 2,7 or 12)2,Formula wt: anhydrous 141.96; Formula wt, dihydrate 177.993,CAS: anhydrous [7558-79-4]; CAS: dihydrate [10028-24-7]5,Specificity: Colorless crystal, easily soluble in water, insoluble in ethanol, relative ...