Place of Origin: China
CAS NO. 2809-21-4
Molecular Weight: 206.02
Clear, Colorless or yellow liquid
White crystal powder
Active content (HEDP)
Active content (HEDP·H2O)
Phosphorous acid (as PO33-)
Phosphoric acid (as PO43- )
Chloride (as Cl-)
pH (1% water solution)
Density (20℃) g/cm3
Ca sequestration (mg CaCO3/g)
Product Advantage:HEDPA is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals` surfaces. HEDPA shows excellent scale and corrosion inhibition effects under temperature 250℃. HEDPA has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDPA can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDPA has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
Method of use:HEDPA is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDPA is used as detergent for metal and nonmetal. In dyeing industry, HEDPA is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDPA is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDPA is used together with polycarboxylic acid.
Packing and storage:liquid:200L plastic drum,IBC(1000L),customers' requirement.
Storage for ten months in shady room and dry place.
Shaanxi United Xingchuang International Co., Ltd.
Address: Fengdong New City of XiXian New Area, Shaanxi.,Xian,Shaanxi
Contact Person: Sally Sun