Specification: Na5p3o10: 94.0%min P2 o 5: 57.0%min Water insoluble matter: 0.15%max Iron(fe): 0.015%max Ph value (1% water solution): 9.2-10.0 Whiteness: 92%min Ignition loss: 1.0 Density (g/cm3): 0.35-0.9 Phase i: 10-30 25kg/ppbag, or as the customers' requirment. 20mt/20'fcl.