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Hedp Cas No 2809-21-4

Posted at: Offers to Sell and Export | Posted on: Thu 01 Jul, 2010 2:56 am |
 
hedp cas 2809 21 4
Products Photos CatalogHedp Cas 2809 Photos Catalog



CAS No. 2809-21-4

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.

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 89.0 min

Phosphorous acid(as PO33-)% 2.0 max 0.5 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 (20℃)g/cm3 1.40 —

Fe ion ppm 10 max 20 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:

HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients.

Storage for ten months in room shady and dry place.

Safety Protection:

Acidity, Avoid contact with eye and skin, once contacted, flush with water. 



Company Contact:

Wealsonwatertreatment photo
Contact Name: Summer King
Company Name: Wealson Water Treatment Chemicals
Email: Email
Tel: 86-632-3880000
Fax: 86-632-3813000
Street Address: Kekou Village,
Zaozhuang, Shandong, China
277100
Website: http://www.watertreatmentagent.com
Member name: Wealsonwatertreatment
Country: China-CN China
Member Since: 01 July 2010
Total Leads: 11 Wealsonwatertreatment Import Export Business Leads
Business focus: Phosphonate Antiscalant, Corrosion Inhibitor, Chelan, Atmp, Hedp, Edtmps, Dtpmp, Bhmtpmpa, Hpaa, Pbtca, Edtmpa, Hmdtmpa, Atmp, Na Polycarboxyl
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