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| Product Name: |
HEDP Water treatment chemical
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| Supply Ability: |
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| Related proudcts |
water treatment chem, hedp, scale inhibitor, |
| Specifications |
HEDP 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid |
| Price Term: |
FOB |
| Port of loading: |
QINGDAO |
| Minimum Order |
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| Unit Price: |
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Name: 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid
Molecular formula: C2H8O7P2 Relative molecular mass: 206.02
Structural formula:
I. Product Property
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 250degree. 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.
II.
items index
Appearance Clear, Colorless to ale yellow aqueous solution
Active content (HEDP)% 58.0-62.0
Phosphorous acid (as PO33-)% 2.0 max
Phosphoric acid (asPO43- )% 0.8 max
Chloride (as Cl-) ppm 100.0 max
pH (1% solution) 2.0 max
Density (20degree)g/cm3 1.43-1.47
Fe£¬mg/L 10.0 max
Colour APHA (Hazen) 30.0 max
Acetic acid % 0.5 max
Ca sequestration (mg CaCO3/g) 500.0 min
III. Application scope and 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 agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as ***ergent. Usually, HEDP is used together with polycarboxylic acid.
IV. Package and Storage
It is usually pack |
| Company: |
zouping dongfang chemical industry co.,ltd
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| Contact: |
Ms. elva wang |
| Address: |
baiyun road |
| Postcode: |
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| Tel: |
86-533-2286667 |
| Fax: |
0533-2286667 |
| E-mail: |
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