HEDP for Water Treatment C2h8o7p2 CAS No: 2809-21-4

Product Details
Our mission would be to build inventive products to consumers with a superior working experience for CAS No.94-36-0, Sodium Salt Of 1-Hydroxyethylene -1,1-Diphosphonic Acid HEDP.4Na, Hexamethylene Diamine Tetra(Methylene Phosphonic Acid) Potassium Salt HMDTMPA.K6. We firmly believe that honesty is the foundation of all cooperation, tolerance is the prerequisite for solving problems, innovation is a weapon for business development, and service is the foundation for creating value. We will combine the needs of customers to provide high-quality services with excellent quality, flexible combinations and reasonable prices. After continuous technological innovation and experience accumulation, we are able to provide customers with high-tech, cost-effective products.

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.
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