1 White powder. 2 have factory 3 Soluble in water, insoluble in alcohol ... treatment agents Anhydrous Disodium phosphateChemical formula Na2HPO4Molecular weight 141.98Properties White powder,specific gravity is 1.52 . Soluble in water, insoluble in ... food additive,buffer agent to acidty,as glaze,solder,baking powder,tanning agent,and for manufacture of pyphosphate,etc.Packing 25kg ...