1-Hydroxy Ethyliden...

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

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

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10 Metric Ton

FOB Price: USD 1.0000

  • Min.Order :10 Metric Ton
  • Purity: 58.0-62.0%, 90%
  • Payment Terms : L/C,D/A,D/P,T/T

Keywords

HEDP Оксиэтилидендифосфоновая кислота Dequest 2010

Quick Details

  • Appearance:Clear, Colorless to pale yellow aqueous solution
  • Application:corrosion inhibitor
  • PackAge:Liquid: 200L plastic drum, IBC(1000L), customers’ requirement. Solid: 25kg/bag, customers’ requirement.
  • ProductionCapacity:20|Metric Ton|Day
  • Storage:Storage for ten months in room shady and dry place.
  • Transportation:BY SEA

Superiority:

Chemical name: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)

Synonyms: HEDPA; Dequest 2010; Etidronic Acid;Hydroxyethylidene-1,1-diphosphonicacid(HEDP);1-Hydroxy-1,1-Ethanediyl ester;1-Hydroxyethylidenediphosphonic Acid;Hydroxyethylidene Diphosphonic acid(HEDP);

Oxyethylidenediphosphonic Acid(OEDP); Оксиэтилидендифосфоновая кислота(ОЭДФ -кислота )

CAS No.:2809-21-4

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)Structural Formula:

 

 

 

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. 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. When built together with other water treatment chemicals, it shows good synergistic effects.

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

Details:

Specification:

Items

Technical index

Appearance

Clear, Colorless to pale yellow aqueous solution

White crystal powder

Active content (HEDP) %

58.0-62.0

90.0min

Phosphorous acid (as PO33-) %

1.0 max

0.8 max

Phosphoric acid  (asPO43- ) %

0.6 max

0.5 max

Chloride (as Cl-) ppm

100.0 max

100.0 max

pH (1% solution)

2.0 max

2.0 max

Density  (20℃) g/cm3

1.43-1.47

-

Fe, mg/L

10.0 max

5.0 max

Color APHA (Hazen)

30.0 max

-

Acetic acid %

0.5 max

 

Ca sequestration (mg CaCO3/g)

500.0 min

 

Application:

HEDP is used as scale and corrosion inhibition, often build with polycarboxylic acid, 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, it is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, it is used as chelating agent.

Packing and Storage:

Liquid: 200L plastic drum, IBC(1000L), customers’ requirement. Solid: 25kg/bag, customers’ requirement.

Storage for ten months in room shady and dry place.

Safety Protection:

Acidity, Avoid contact with eye and skin, once contacted, flush with water.

Related Products:  1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

                                   Monosodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Na)

                                   Potassium salt of1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Kx)

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