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sodium phosphate purity:98.5% Molecular: Na3PO4.12H2O Appearance :colorless crystalline powder. Package: Double-lined or polyethylene bags, jackets composite plastic woven bags, packaging, weighing 50kg bag.Usage : 1.62g/cm3 density. 73.3 ° C melting point. 76.7 ° C decomposition. Heat to 100 ° C lost 12 crystal water from Anhydrous. In dry air easily weathered. Both soluble in water. Their solution was strongly alkaline. Do not dissolve in ethanol and carbon disulfide.The product can be used for the soft water and detergent, boiler scale inhibitor, dyeing, the fixing agent, mercerizing fabric agents, and metal corrosion inhibition and metal Inhibitor, enamel production of flux and bleaching agent, tanning the skin and fat free agent Retting agents. Food-grade sodium water for 12 food processing of emulsifiers, quality improvers, nutritional supplements and food with a bottle (LP) of detergent. Technical IndexesExcellent First gradeQualifiedSodium phosphate(sodium phosphate hydrate)content % ≥ 98.598.095.0 Sulfate(SO4^2-,)content %≤ 0.500.500.80 Chloride (“cl”)content%≤ 0.30 0.40 0.50 Water-insoluble content%≤ 0.05 0.10 0.30 methyl orange alkalinity(Na2O) 16.5-19.0 16.0-19.015.5-19.0 Fe content %≤ 0.01 - - Arsenic(by As)%≤ 0.005- -