... field, paper-making, textile, dyeing, petrochemical industry, tanning industry, metallurgical industry and building material industry, it is mainly used as a water ... 1, 000kg. Store at a well ventilated, dry place.Sodium Hexametaphosphate food gradeAppearance: White powderSpecification:Total phosphate as P2O5: ... .001% maxAs: 0.0003% maxF: 0.003% max 68%min Sodium Hexametaphosphate Industrial Grade