Usage: Use mainly as a softener and anticorrosion agent for industrial water, diffusion agent of manufacture paper, bonding agent of blast-furnace refractory, floatation agent for ore-dressing, etc.  Food grade can be used as quality improver in beverage, milk products and can goods etc, as PH adjuster and as metal ion adhesive, It can help to protect color of food,  to emulsify fats in meat cans and to keep beer from muddling.