Chemical Formula:  (NaPO3)6
Molecular Weight: 611.82
Property:  white powder or glassy piece or granular, specific gravity is 2.484 (20oC), melting point 616oC, easily soluble in water but insoluble in organic solvent.

SHMP---technical grade
Spec:
Total Phosphate:  68%min
Unactive Phosphate:  7.5%max
Iron:  0.05%max
pH of 1% solution:  5.8-6.5
Water Insolubles:  0.06%max
Heavy Metals: 0.001%max
Arsenic: 0.0003%max
Fluoride:  0.003%max
Solubility:  through test