sodium phosphate

Also called monobasic sodium phosphate. a white, crystalline, slightly hygroscopic, water-soluble powder, NaH₂PO₄, used chiefly in dyeing and in electroplating.

Also called dibasic sodium phosphate, disodium phosphate. a water-soluble compound that in its anhydrous form, Na₂HPO₄, occurring as a white, crystalline, hygroscopic powder, is used chiefly in the manufacture of ceramic glazes, enamels, baking powder, and cheeses, and that in its hydrated form, Na₂HPO₄⋅xH₂O, occurring as clear colorless crystals, is used chiefly in the manufacture of dyes, fertilizers, detergents, and pharmaceuticals.

Also called tribasic sodium phosphate, trisodium phosphate, TSP. a colorless water-soluble compound, Na₃PO₄⋅12H₂O, occurring as crystals: used chiefly in the manufacture of water-softening agents, detergents, paper, and textiles.