... inhibitor,cleaners,complexant 4. Best price 1.Product :Product name:Water treatment chemicals HEDP,1-Hydroxy Ethylidene-1,1-Diphosphonic Acid ... antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects. The solid state ... contact with eye and skin, once contacted, flush with water. OTHER the UN NO.of HEDP is 3265 7.Our service:(1 ...