... Mg, Cu and Fe; it is a fine agent for water treatment. Application:For industrial use, such as oil field, paper-making ... is mainly used as a water softening agent in solution for printing, dyeing, and boiler; Diffusant in papermaking; slow corrodent, floating ... medium, high temperature agglomerant, detergent and soil analytical chemistry reagent. For food grade, it is mainly used as additive agent, PH ...