HEDP (1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid) CAS 2809-21-4

Product Details
We use superb production technology, advanced testing equipment, perfect scientific management system, and fast logistics to continue to improve customer satisfaction with our CAS No.2809-21-4, TBC, Diethylene Triamine Penta (Methylene Phosphonic Acid) DTPMP. We give full play to the advantages of the integration of the whole industrial chain to provide systematic solutions and comprehensive services for our customers. Rigorous and standardized management is the fundamental guarantee to achieve our product quality objectives. We always adhere to one step at a time, focus on the details of each product, and do a good job of every service. Equipped with a group of well-trained designers, our company provides timely and considerate pre-sales and after-sales services to customers through a good distribution network.

Chemical name:

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

CAS No.:

2809-21-4

Molecular formula/weight:

C2H8O7P2=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.

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

Liquid

Solid

Appearance

Colorless or pale yellow solution

White crystalline powder

Active content

60.0% min

90.0 min.

Phosphorous acid (as PO33-)

2.0% max.

0.8 max

Phosphoric acid  (as PO43- )

0.8% max.

0.5 max

Chloride (as Cl-) ppm

100 max

100 max

PH value of 1% solution

2.0 max. 

2.0 max

Density (20)g/cm3

1.44 min


Fe mg/L

10 max. 

5 max

Color(Hazen)

50 max


Ca sequestration (mg CaCO3/g)

500 min


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 1-10mg/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:

Liquid:250 kg net PE drums or 1250kg net IBC.  

Solid: 25 kg net bags.

 


With wide experience and expertise, Richem International is specialized in supplying quality and effective 1-hydroxy ethylidene-1,1-diphosphonic acid (hedp). As one of the leading manufacturers and suppliers in China, we are equipped with a professional and productive factory. Please rest assured to buy.
As a manufacturer and service provider in the HEDP (1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid) CAS 2809-21-4 industry, we will continue to work hard to provide the market with first-class technology and services. Based on the concept of 'safety, professionalism and value', our company continuously strengthens research and development, updates service concepts and innovates management models. The product has been unanimously recognized by users. Our unique advantages provide a solid guarantee for providing customers with efficient, professional and comprehensive services, and increase our influence and brand awareness in the industry.
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