Properties: colorless rhombic crystal, specific gravity: 1.91, M.P.: 60, easy soluble in water and insoluble in alcohol and its aqueous solution is acidic. Easy agglomeration in air, dehydrolyze to produce anhydrous product when heated to 95.
Uses: used in boiler water treatment, electroplating, to produce sodium hexametaphosphate, ***ergent, metal cleaning agent, precipitant of dyes and pigment