... powder, density is 2.484 (20°C), easily soluble in water, but not in organic solution, absorbent to dampness and turn ... , Mg, Cu and Fe; it is a fine agent for water treatment. 2>Sodium Hexametaphosphate's Technical Specifications: No.SpecificationsIndustrial GradeFood ... agent, and nourishment;c) it is mainly used as a water softening agent in solution for printing, dyeing, and boiler; Diffusant ...