Properties: This product is colorless or white crystal. It is soluble in water, insoluble in organic solvents; weathering in dry air, losing twelve crystalline hydrates (Na3PO4) at 100 degrees. Usage: As a water softener in the metallurgical, chemical, textile, printing and dyeing, papermaking, electromechanical industry, boiler tube cleaning agents and detergents, metal anti rust agent. Packing: 25kg or 50kg plastic woven bag lined with polyethylene liner or the packing made accordingly.