Sodium Hexametaphosphate,SHMP 68%(Tech Grade) 1.SGS Quality Test before Shipping 2.Own ... Factory Supply Direct 3.Crystals Powde Sodium Hexametaphosphate,SHMP 68% (Tech Grade) Synonyms: Hexasodium metaphosphate, Graham's salt, Glassy sodium ... of Use: Used in industries of oil fields, paper-making, textile, dyeing, petroleum, chemistry, metallurgy and construction materials etc.as water ...