Hedp - Chinaprice: contact company for price
CAS No. 2809-21-4
Molecular Formula: C2H8O7P2 Molecular weight: 206.02
HEDP 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. HEDP shows excellent scale and corrosion inhibition effects under temperature 250℃. HEDP 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). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.
Appearance Clear, Colorless to pale yellow aqueous solution White crystal powder
Active content (HEDP)% 58.0-62.0 90.0min
Phosphorous acid (as PO33-)% 1.0 max 0.8 max
Phosphoric acid (asPO43- )% 0.6 max 0.5 max
Chloride (as Cl-) ppm 100.0 max 100.0max
pH (1% solution) 2.0 max 2.0 max
Density (20℃)g/cm3 1.43-1.47 -
Fe，mg/L 10.0 max 5.0 max
Colour APHA (Hazen) 30.0 max -
Acetic acid % 0.5 max
Ca sequestration (mg CaCO3/g) 500.0 min
HEDP 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, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP 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, HEDP is used together with polycarboxylic acid.
Package and Storage:
HEDP liquid: 200L plastic drum, IBC(1000L), customers’ requirement.
HEDP solid: 25kg/bag, customers’ requirement.
Storage for ten months in room shady and dry place.
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
For any questions and needs please contact us below
- Posted By: Zaozhuang Youbang Chemicals Co,. Ltd.
- Phone: 86-632-5796776
- Address: Zhongtian Road, Shizhong district, Zaozhuang city,, Zaozhuang, China
- Website: http://www.youbangchem.net
Published date: September 7, 2012 -
- Business Description: Youbang Chemicals Co., Ltd. ( YBC), founded in 1999, is one of the largest Chinese manufacturers of polymers, biocides, phosphonates and other water treatment chemicals.
YBC has acquired its Certification for ISO9001 Quality Management System (QMS), Certification for ISO9001 14001 Environmental Management System (EMS) and Certification for OHSAS 18001 Occupational Health and Safety Assessment Series.
YBC has also been granted network access license for water treatment chemicals for electric power systems and SINOPEC.
YBC boasts of stable product quality, reliable product performance, complete product line of water treatment chemicals, customized products, rapid response, timely delivery and perfect post sales service. With a total staff number of 300, an annual capacity of 50,000 MT and an annual turnover of $65 Million, YBC provides its products through reliable agencies and distributors worldwide.
YBC is dedicated to manufacture of high quality water treatment chemicals for extensive applications in numerous fields of industrial water treatment, including but not limited to: oilfields, boilers, cooling towers, geothermal power plants, and reverse osmosis systems, etc.
YBC is always committed to R&D and innovation. YBC s pilot and bench test facilities allow for various performance evaluation tests on a basis of customized formulations.
YBC, your professional supplier and partner of water treatment chemicals in China.
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