Etidronic Acid HEDP 60% CAS NO.2809-21-4

Etidronic Acid

CAS No.  2809-21-4

Molecular Formula:   C₂H₈O₇P₂                Molecular weight: 206.02

Properties:

Etidronic Acid is a scale and 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. Etidronic Acid shows excellent scale and corrosion inhibition effects under temperature 250℃. Etidronic Acid 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). Etidronic Acid can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, Etidronic Acid has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.

The solid state of Etidronic Acid 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:

Usage:

Etidronic Acid 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, Etidronic Acid is used as detergent for metal and nonmetal. In dyeing industry, Etidronic Acid is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, Etidronic Acid 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, Etidronic Acid is used together with polycarboxylic acid.

Package and Storage:

Etidronic Acid liquid: 200L plastic drum,IBC(1000L),customers’ requirement.

Etidronic Acid solid: 25kg/bag,customers’ requirement.

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:

Etidronic Acid;

HEDP;HEDP(A);HEDPA;

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;

Oxyethylidenediphosphonic Acid(OEDP)