... , paper production, textile, dyeing, petroleum, chemistry, metallurgy and construction materials Sodium Hexametaphosphate(SHMP)Chemical formula :(NaPO3)6Molecular Weight:611.82Standard executed: HG/2519 ... F) % ≤ 0.0039Water Insoluble matter % ≤0.050.0510Polymerization9-219-21 Sodium Hexametaphosphate