... hydrate disodium phosphate's specific gravity is 1.52, and melting point is 34.6 . Disodium phosphate's dihydrate to seven ... , buffering agent, glaze agent, welding agent, and auxiliary agent in electroplating and leather tanning etc. It is used to produce ... used as quality improver, emulsifier, and nourish-supplement agent, fermentation adjunct, and binder. Packing and storage: In double layer bags of ...