Disodium phosphate(DSP) [Synonyms]:Disodium hydrogen phosphate dodecahydrate[Chemical formula]: Na2HPO412H2O[Molecular weight]: 358.14[Properties]: White or colorless, crystal free flowing solid, effloresce in air, soluble in water easily, relative density is 1.63, melting point is 34.6 . [Uses]: Used as boiler water softener; treatment of leather and fabrics to increase weight; flame retardant for fabrics, wood and paper in dyeing; culture medium for biochemical treatment; raw material for production of sodium pyrophosphate and other phosphates. [Standard executed]: G/T2965-2000/HG2920-2000Specifications Specifications Technical grade Food grade Maincontent, as Na3PO4·12H2O.min97.098.0Phosphorus pentoxide, as P2O5.min_19.4Chloride, as Cl.max0.050.014Arsenic, as As.max_0.0003Fluoride, as F.max_0.005Heavy metals, as Pb.max_0.001Sulfate, as SO42-.max0.70.014PH _PH_Water insolublemax0.05_[Packing]: Plastic knit bag, Net weight 25 kg