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| Product Name: |
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
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| Supply Ability: |
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| Related proudcts |
hedp, 1-hydroxy ethylidene, |
| Specifications |
HEDP liquid: 200L plastic drum,IBC(1000L),customers¡¯ requirement |
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1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
CAS No. 2809-21-4
Molecular formula: C2H8O7P2 Molecular weight: 206.02
Structural formula
Properties
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 ordnary 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.
Specification
Items Index
Appearance Colorless or light yellow tran***rent liquid White crystal powder
Active content(HEDP)% 58.0-62.0 90.0min
Phosphorous acid(as PO33-)% 1.0max 0.8max
Phosphoric acid (as PO43- )% 0.6max 0.5max
Chloride (as Cl-)% ppm 100.0max 50.0max
pH(1%solution) 2.0max 2max
Density(20℃)g/cm3 1.43-1.47 ¡ª
Fe,mg/l 10max 5.0max
Colour APHA (Hazen) 30max ¡ª
Usage
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 ***ergent 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 |
| Company: |
Shandong IRO Water Treatment Co., Ltd
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| Contact: |
Ms. Sharon Li |
| Address: |
No.44-60, Zhongshan RD, Qingdao, Shandong, China |
| Postcode: |
266000 |
| Tel: |
8653266888207 |
| Fax: |
8653285028486 |
| E-mail: |
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