SODIUM HEXAMETAPHOSPHATE SHMP is one kind of polymer, which is transparent glass flakes or white powder crystal. Technical Data Sheet: Parameter - Industrial Grade Total Phosphate, as P2O5 % 68.0 Min Inactive Phosphate, as P2O5 % 7.5 Max Iron, as Fe % - 0.01 Max Ph Value (1% solution) - 5.8-6.5 Water Insoluble % - 0.05 Max Fineness (Through 60 Mesh) - 85% Features of Sodium Hexametaphosphate Become sticky after moisture absorption. Easy to be wet in air. Highly soluble in water. Acidic aqueous solution. Easy to hydrolyze or form phosphite. Specific Gravity is 2.7 - 2.8 (average) Applications of Sodium Hexametaphosphate High-efficiency softener for cooling water treatment in power stations, rolling stock, boilers and in fertilizer plants. Detergent additives, control or anti-corrosion agents. Used in medicine as rust preventive for drilling pipes and to control the viscosity of the slurry during oil drilling. Acidic aqueous solution. Fabric printing, tanning, paper making, colour film, soil analysis, radiochemistry, analytical chemistry and in other departments.