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Hedpa - China

price: contact company for price

1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid (HEDP) CAS No.: 2809-21-4

Molecular Formula: C2H8O7P2 Molecular weight: 206.02 Structural Formula:

Properties:

HEDP is an organphosphoric 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 organ phosphoric 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 brown liquid White crystal powder

Active content (HEDP)% ≥ 50.0 60.0 89.0

Phosphorous acid (as PO33-)%≤ 2.0 2.0 0.80

Phosphoric acid (asPO43- )% ≤ 0.8 0.8 0.50

Chloride (as Cl-)%≤ 1.0 1.0 0.10

pH (1% solution) ≤ 2 2 2.0

Density (20℃)g/cm3≥ 1.34 1.40 ——

Fe ion ppm ≤ 10 10 5.0

Active content (as HEDP•H2O )% ≥ —— 98.0

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 30kg or 250kg net Plastic Drum, 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.

Hedpa

For any questions and needs please contact us below


Company Contact:


  • Phone: 00865333151273

  • Address: huantai county, zibo, China

  • Email: Email


Published date: September 6, 2012 -

  • Business Description: Shandong province huantai county Jinlong Chemical Co., Ltd is a manufacturer of water treatment chemicals. We have engaged in industrial water treatment chemicals manufacturing and sales for 22 years, which is one of the most professional of China's industrial water treatment chemicals suppliers.
    Our company is located at XinCheng Industrial Garden, a famous historic city. Our company owns complete production equipment, and it can manufacture all kinds of water treatment chemicals. Our technicians can research new products independently. Our main product series are Antiscale, Corrosion Inhibitors, dispersant, and so on. Our products have excellent quality and competitive price, which have been exported to 30 countries through the world, and won good opinions from customers. We will do our best to satisfy your request.

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