Specification:
Main content(Na3PO4•12H2O): 98%min;
Phosphorus pentoxide (P2O5): 18.3%min;
Sulfate (as SO4): 0.5%max;
Chloride ( as Cl): 0.5%max;
Water insoluble: 0.1%max;
Sodium oxide (as Na2O): 15-19
