Product name: SODIUM HYPOPHOSPHITE Specifications: NaH2PO2.H2O: 100.0%Min. Na2HPO3: 0.20%Max. Ca: 0.002%Max. Fe: 0.0001%Max. SO4: 0.003%Max. Cl: 0.003%Max. PH: 6-8 Packing: in 25kg bag.