Hexametaphosphate chemical formula: (NaPO3) 6 MW: 611.82 Executive Standard: HG/T2519-1998 hexametaphosphate standard Item Index Top grade First grade Qualified product TP hydrochloric acid (as P2O5) content,%> 68.0 67.0 65.0 Inactive phosphate (as P2O5) content of <7.5 8.0 10.0 Water insoluble content,% 0.05 0.10 0.15 Iron (Fe) content,% 0.02 0.10 0.20 Ph value 5.8-7.3 5.8-7.3 5.8-7.3 Solubility Qualified Qualified Qualified average degree of polymerization n 10-16 10-16 10-16 Related Properties: White powder, specific gravity 2.484 (20 ℃), easily soluble in water, insoluble in organic solvents, hygroscopic, absorbing water in the air was gradually viscose like, can be used with other metal ions generated complex salt, is a good water treatment agent. Uses: used oil, paper, textile, printing and dyeing, petroleum, chemical, leather, metallurgy, building materials and other industries, for water softener, buffer, flotation agent, high temperature binder as an additive in the food industry, nutritional agents, quality improvers, PH value adjusting agent, a metal ion chelating agent, a binder, expansion agent. Packing: plastic woven (double endometrial), net weight 25 kg, stored in ventilated and dry place.