... -29-4 Molecular Formula: Na5P3O10 Molecular weight: 367.86 1, Properties: White microdot powder with luster, melting point at ... 2+, Mg 2+, can soften hard water, change suspension into solution, slightly alkaline, without causticity. 2, Usage: Used as ... ITEMINDEX TECH. GRADENa5P3O10 (%):94MinP2O5 (%):57 Minwater Insoluble (%):0.10MaxPh (1% solution):9.2-10Whiteness(%):90MinBulk Density (g/ cm3)0.7-0 ...