Sodium Hexametaphosphate, SHMP,(NaPO3)6 oil field, paper making, textile, printing dyeing, petrochemical, leather & building 3)6[Molecular weight]: 611.82[Physiochemical properties]: white powder, specific gravity:2.484(20),easily soluble in water, insoluble in organic solvents.2O5) %≥2O5) %≥