1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is an organophosphoric acid corrosion inhibitor. 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid can chelate with iron, copper, and zinc ions to form stable chelating compounds. 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid has good chemical stability under high pH value and is hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid offers good anti-scale and visible threshold effects.
