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Soild HEDP 1-Hydroxyethylidene-1,1-diphosphonic acid C2H8O7P2 CAS NO.:2809-21-4

Categories Organophophine antiscale
Brand Name: JIALU
Model Number: 2809-21-4
Certification: ISO9001, ISO14001
Place of Origin: CHINA
Payment Terms: L/C, T/T
Supply Ability: 40000mt/year
Delivery Time: 3 days
Packaging Details: 25KG/BAG
Usage: scale inhibitor
application: power plant
Classification: Chemical Auxiliary Agent
Type: Adsorbent,Transparent liquid,Plasticizer,water treatment chemicals,paper making additive
Application: For water treatment,water purification,coal based granular activated carbon uses in industry,Chemical water treatment,Metal refining
Purity: 90%
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Soild HEDP 1-Hydroxyethylidene-1,1-diphosphonic acid C2H8O7P2 CAS NO.:2809-21-4

Soild HEDP 1-Hydroxyethylidene-1,1-diphosphonic acid C2H8O7P2

CAS NO.:2809-21-4

SYNONYMS: Dequest 2010, Etidronic Acid

HEDP is an organophophoric acid inhibitor. It can chelate with Fe, Cu, and Zn ions to form scale chelating compounds. It can dissolve the oxidized materials on these metal’s surfaces. It 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, it has good antiscale and visible threshold effects.

Solid HEDP is crystal powder, suitable for usage in winter and freezing district. Due to its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.

Appearanceclear, colorless to pale yellow aqueous solutionWhite crystal powder
Active content(HEDP)%58.0-62.090.0 min.
Phosphorous acid(as PO33-)%2.0 max0.8 max
Phosphorous acid(as PO43-)%0.8 max0.5 max
Chloride(as Cl) ppm100.0 max100.0 max
PH (1% solution)2.0 max2.0 max
Density(20℃) g/cm31.43-1.47-
Fe, mg/l10.0 max5.0 max
Colour APHA(Hazen)30.0 max
Ca sequestration(mg CaCo3/g)500.0 min.


HEDP is used as scale and corrosion inhibition, often built with polycarboxylic acid, in circulating cool water system, oil field and low pressure boilers in fields such as electric power, hcemical industry, metallurgy, fertilizer, etc.

In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, it i s used as peroxide stabilizer and dye-fixing agent; in non-cyanide electronplating, is is used as chelating agent.

Cheap Soild HEDP 1-Hydroxyethylidene-1,1-diphosphonic acid    C2H8O7P2 CAS NO.:2809-21-4 for sale
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