... dyeing chemicals, paper chemical and Polyurethane material series etc. Such as HEDP, PAC, POP, TDI and so on. HEDP Specifications: ... system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In ... The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is ...