HEDP CAS No.2809-21-4

HEDP CAS No.2809-21-4
HEDP CAS No.2809-21-4
HEDP CAS No.2809-21-4
HEDP CAS No.2809-21-4
- Description -

HEDP Quick Details

Other NamesHEDP
CAS No.2809-21-4
Chemical Name1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Molecular Formula/MFC2H8O7P2
EINECS No.202-436-9
ClassificationOrganic/Water Treatment Chemicals
Grade StandardGrade StandardIndustrial Grade
AppearanceClear, Colorless to pale yellow aqueous solution 
Package25kgs,250kgs,IBC plastic drums.
Place of OriginDALIAN,CHINA

HEDP Main Applications

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 centigrade. 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.

HEDP is used as scale and corrosion inhibition in circulating cool water system & comma; oil field and low-pressure boliers in fields such as electric power & comma; chemical industry & comma; metallurgy & comma; fertilizer, etc & period; In light woven industry & comma; 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.  

HEDP Specification

Index NameSpecifications  Results
AppearanceClear, Colorless to pale yellow aqueous solution Clear, Colorless aqueous solution 
Active Content(as HEDP),%58.0-62.060.10 
Phosphorous Acid (as PO33- ),%1.0max.0.46
Phosphorous Acid (as PO43- ),%0.6max.0.17
Acetic Acid, %0.5max. 0.11 
Chloride(as Cl-) , ppm 100max37.2 
PH (1% solution)2.0max   1.70 
Density(20ºC) g/cm31.43-1.471.44
Iron (as Fe) , ppm10.0max 3.8 
Ca sequestration, mg CaCO3/g500min 510.9

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At present, we provide more than 200 kinds of chemical raw materials and ingredients.HEDP is one of our main products.

A wide variety of HEDP options are available to you. Before HEDP order , we can send the sample for your testing ,We ensure the quality is the same as bulk quantity.

There are many HEDP suppliers, mainly located in Asia. The HEDP  we supply is cheap and the quality is guaranteed. HEDP products are popular all over the world.

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