1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP)
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- Add:High-tech Zone, Heze City, Shandong Province China, Zip: 247000
- Contact: Jason
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- Email:jason@evowt.net
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1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
CAS NO.2809-21-4
Molecular weight: 206.02
Molecular Formula: C2H8O7P2
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 ordinary light and heat conditions.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.
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 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.
Package and Storage
HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required
Storage for ten months in room shady and dry place.
Safety Protection
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
Specification
|
tems |
index |
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Appearance |
Colorless or light yellow transparent liquid |
White crystal |
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Active content(HEDP)％ |
50 min |
60 min |
90 min |
|
Phosphorous acid(as PO33-)% |
2.0 max |
2.0 max |
0.8 max |
|
Phosphoric acid (as PO43 )% |
0.8 max |
0.8 max |
0.5 max |
|
Chloride (as Cl-)% |
0.01 max |
0.01 max |
0.01 max |
|
pH(1％ solution) |
2.0 max |
2.0 max |
2.0 max |
|
Density (20℃)g/cm3 |
1.34 min |
1.40 min |
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|
Fe,mg/L |
10.0 max |
10.0 max |
5.0 max |
| Industry Category | Chemicals/Water Treatment Chemicals/Other Water Treatment Chemicals |
|---|---|
| Product Category | Organic Phosphorus Series Chemicals |
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