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| Product Name: |
HEDP--1-Hydroxyethane-1,1-diphosphonic Acid CAS NO.2809-21-4
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| Supply Ability: |
20000Tons |
| Related proudcts |
hedp, |
| Specifications |
HEDP liquid |
| Price Term: |
FOB, CIF, CNF |
| Port of loading: |
FOB qingdao port or CIF/CNF any port. |
| Minimum Order |
1 ton |
| Unit Price: |
1000 |
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Water treatment chemical - HEDP
Hydroxy Ethylidene-1,1-Diphosphonic Acid
CAS No. 2809-21-4
Molecular Formula: C2H8O7P2 Molecular weight: 206.02
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 metalsĄŻ surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250oC. 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.
Specification
items
index
Appearance
Colorless or light yellow tran***rent liquid
White crystal powder
Active content (HEDP)%
58.0-62.0
90.0 min
Phosphorous acid (as PO33-)%
2.0 max
1.0 max
Phosphoric acid (asPO43-)%
0.8 max
0.5 max
Chloride (as Cl-)%
0.01 max
0.01 max
pH (1% solution)
2 max
2 max
Density (20oC)g/cm3
1.40
-
Fe ion ppm
10 max
5.0 max
Colour APHA (Hazen)
40 max
-
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. |
| Company: |
Zouping Dongfang Chemical Industry Co.,Ltd
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| Contact: |
Ms. Cherry Dong |
| Address: |
haosheng |
| Postcode: |
256200 |
| Tel: |
8615966984900 |
| Fax: |
865434502242 |
| E-mail: |
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