Dictionary
so'dium phos'phate
Chem.
1. Also called
monobasic sodium phosphate. a white, crystalline, slightly hygroscopic, water-soluble powder, NaH
2PO
4, used chiefly in dyeing and in electroplating.
2. Also called
dibasic sodium phosphate, disodium phosphate. a water-soluble compound that in its anhydrous form, Na
2HPO
4, 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, Na
2HPO
4·xH
2O, occurring as clear colorless crystals, is used chiefly in the manufacture of dyes, fertilizers, detergents, and pharmaceuticals.
3. Also called
tribasic sodium phosphate, trisodium phosphate, TSP. a colorless water-soluble compound, Na
3PO
4·12H
2O, occurring as crystals: used chiefly in the manufacture of water-softening agents, detergents, paper, and textiles.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.