ADDEZ®HED can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, ADDEZ®HED has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
ADDEZ®HEDP shows excellent scale and corrosion inhibition effects under temperature 250℃. ADDEZ®HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt).