... boilers in fields. The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of ... , fertilizer, etc.. In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used ... -50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid. Package and ...