... (20), easily soluble in water, but not in organic solution, absorbent to dampness, and turn sticky when absorbed dampness in air ... % solution): 5.8-7.3Water insoluble: 0.05% maxApplication: For industrial use, such as oil field, paper-making, textile, dyeing, petrochemical ... : 0.0003% maxF: 0.003% max 68%min Sodium Hexametaphosphate Industrial Grade