HEDP/HEDPA Liquid CAS No. 2809 21 4 1 Hydroxy Ethylidene 1,1 Diphosphonic Acid 60% 50%

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
(HEDP)

CAS No.: 2809-21-4                         EINECS No.: 220-552-8
Molecular Formula: C2H8O7P2       Molecular Weight: 206.02

RIDADR: UN 3265 8/PG III

Structural Formula:

Properties:

HEDP is a kind of scale and corrosion inhibitor which belongs to organic phosphonic acid. It can form stable complexes with iron, copper, zinc and other metal ions, and can also dissolve the metal surface oxide. Under 250 ℃ condition, HEDP can still play a good corrosion and scale inhibition effect.

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 show better than that of other organic phosphonic acid (salt) acids (salt).

HEDP can react with metal ions in water system to form hexa-element chelating complex, especially with calcium ions. Therefore, HEDP has good anti-scale and visible threshold effects. When used in combination with other water treatment chemicals, it shows ideal synergistic effects.

HEDP solid state is a high purity product, suitable for cold winter areas; Because of its high purity, it is especially used as the cleaning agents in electronics industry, and additives in daily chemicals.

Applications:

HEDP is widely used as scale and corrosion inhibitor in industrial circulating cooling water systems of electric power, chemical industry, metallurgy, chemical fertilizer, and also in medium or low pressure boilers, oilfield water injection and oil pipeline.

Besides these applications, HEDP can also be used as cleaning agent of metal and nonmetal in the textile industry, as peroxide stabilizer and fixing agent in bleaching and dyeing industry, as complexing agent in cyanide free electroplating industry, as the carrier of radioactive elements in pharmaceutical industry, and so on.

Specification:

Usage:

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.

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;

Oxyethylidenediphosphonic Acid (OEDP);

Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents

Gite concentrate on water treatment chemicals industry since established, and have make great progress. On the basis of technology development, our company has taken in a group of experienced personnels who are talented in senior management, marketing and skills of producing. In the company, great attention is paid to basic management, stable quality, continuously improving pre-sale services, sale and after-sale services, and enhancing the market competitiveness of ouur products.Main products of our company: HEDP, ATMP, PBTCA, PAA, PAAS.

• We are Shandong Gite Chemical Co.,Ltd. concentrating on water treatment chemicals industry since established, and have make great progress. 
• With 20 year experience ,we have won great reputation and establied strict quality control systems at home and abroad.
• It will be our geat pleasure if there will be any chance to cooperate with you in further time.

Question 1: Are you a Factory?
Answer:
Yes, we have our own Factory and sell online, export priority.

Question 2: How can I get Free samples for testing?
Answer:
Kindly send us your address, we will send the Free samples to you.

Question 3: I don’t know whether your product meets my standards or not, how can I order this from you?
Answer:
You can request samples from us and test it. Sample is for free, but courier fees buyer pays.

Question 4: How do you guarantee the quality of your products?
Answer:
All our products have to be checked strictly before entry warehouse.

Question 5: How do you pay for these products?
Answer:
We have the following payment modes:
1. Paypal; 2. Alibaba Trade; 3. T/T (Telegraphic Transfer); 4. L/C (Letter of Credit)