... 2 White powder, melting point at 622 3 Tech,food grade Sodium tyipolyphosphateChemical formula Na5P3O10Molecular weight 367.86Properties White gpowder, melting ... and Mg etc.And can soften hard water to make suspension into solution,alikaline,without causticity.It is a surfactant,and ... .0016Arsenic,as As %≤0.00037Frioride %≤0.003 stpp 95% food grade