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Brand: | - |
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Category: | Chemicals / Inorganic Chemical Materials / Inorganic Acid |
Label: | HEDP |
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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 metals’ surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature
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 transparent liquid | White crystal powder |
Active content (HEDP)% | 58.0-62.0 | 90.0min |
Phosphorous acid (as PO33-)% | 2.0 max | 0.8 max |
Phosphoric acid (asPO43- )% | 0.8 max | 0.5 max |
Chloride (as Cl-)% | 1.0 max | 0.1max |
pH (1% solution) | 2 max | 2 max |
Density ( | 1.40 | - |
Fe,mg/L | 10 max | 5 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 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:
HEDPliquid: Normally In
Storage for ten months in room shady and dry place.
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
Synonyms:
HEDP;HEDP(A);HEDPA;ETIDRONIC ACID;1-Hydroxy Ethylidene-1,1-Diphosphonic Acid; Hydroxyethylidene-1,1-diphosphonicacid(HEDP); 1-HYDROXYETHYLIDENEDIPHOSPHONIC ACID;Hydroxyethylidene Diphosphonic acid(HEDP);1-hydroxy-1,1-Ethanediyl ester
Qingdao irotaihe international trade co., ltd | |
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Country/Region: | Shan Dong - China |
Business Nature: | Manufacturer |
Phone: | 86-0532-66888202 |
Contact: | Daniel Gu (Trade Manager ) |
Last Online: | 29 Sep, 2009 |