... .Free sample 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid----HEDP Shanghai Sungo is the leading group with ourself manufacturer ... chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing ... corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid. Safety Protection: Avoid ...