1-Hydroxyethylidene-1,1-diphosphonic acid 2809-21-4, China 1-Hydroxyethylidene-1,1-diphosphonic acid 2809-21-4 Manufacturers, China 1-Hydroxyethylidene-1,1-diphosphonic acid 2809-21-4 Suppliers

1-Hydroxyethylidene-1,1-diphosphonic acid

Category :

Catalyst and Auxiliary

EC NO : 220-552-8

Molecular Formula : C₂H₈O₇P₂

Main Specifications :

Synonyms : 1-Hydroxyethane-1,1-diphosphonic Acid;Etidronic acid;HEDP;HEDPA; Hydroxy Ethylidene-1,1-Diphosphonic Acid;1-Hydroxy Ethylidene-1,1-Diphosphonic Acid;1-Hydroxyethylidene diphosphonic Acid;1-hydroxy ethylene-1,1-diphosphonic acid;1-HYDROXYETHYLIDENEDI(PHOSPHONIC ACID);disodium (1-hydroxyethane-1,1-diyl)bis[hydrogen(phosphonate)];(1-hydroxyethane-1,1-diyl)bis(phosphonate);Hydroxyethylidenedi(phosphonic acid);Hydroxyethylidine Diphosphonic Acid;

1-Hydroxyethylidene-1,1-diphosphonic acid

Molecular Structure:

1-Hydroxyethylidene-1,1-diphosphonic acid 2809-21-4

Product description:

Chemical name:

1-Hydroxy Ethelidene-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 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. 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.

Specification:
Appearance	Colorless or pale yellow transparent liquid
Active content	58.0-62.0%
Phosphorous acid (as PO33-)	2.0% max.
Phosphoric acid (as PO43- )	0.8% max.
Chloride (as Cl-)	1.0% max.
PH value of 1% solution	2 max.
Density (20℃)g/cm3	1.4
Fe	10 ppm max.

Application: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 1-10 mg/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/Storage: 250 kg net PE drums.Store in cool, dry, well ventilated area above 0℃.

Send your inquiry to 1-Hydroxyethylidene-1,1-diphosphonic acid supplier

Company：	Weifang Richem International Ltd
Contact：	Mr Du
Phone：	+86-536-2222176
Mobile phone：
Fax：	+86-536-2222175
E-mail：	Contact Supplier
Website：	http://www.sinorichem.com
Address：	B415 Diamond Plaza,No.227 East Dongfeng
Zip Code：	261041