Molecular formula:Na3PO H2O Molecular weight:164,380 Content:98% Specification:tech and food grade CAS NO.:7601-54-9 Properties:White or colorless crystals Purpose:Used as soft water agent, cleaning agent in electroplating, color fixer in fabric dyeing and flux in enamel ware manufacturing, and so on. Standard:Item Unit Specification Anhydrous Hydrate Tech grade Food grade Tech grade Food grade Main content： % 98 min 98 min 98 min 98 min Phosphorus pentoxide as P2O5: % 39.5 min 39.5 min 18.3 min 18.3 min Sodium oxide as Na2O: % 36-40 36-40 15.5-19 15.5-19 Sulfate as SO4: % -- 0.25 max -- 0.5 max Heavy metal as Pb: % -- 0.001 max -- 0.001 max Arsenic as As: % -- 0.0003 max -- 0.0003 max Fluoride as F: % -- 0.005 max -- 0.005 max Water insoluble: % 0.05 max 0.05 max 0.05 max 0.05 max