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Hydroxyethane Diphosphonic Acid

Hydroxyethane Diphosphonic Acid
Hydroxyethane Diphosphonic Acid
Product Code : AI14
Product Specifications
  • Taste
  • Other
  • Physical Form
  • Liquid
Product Description

HEDP (1-Hydroxyethylidene-1,1-diphosphonic acid), also called Hydroxyethane Diphosphonic Acid is a scale inhibitor used mostly in industries in applications, like detergents and industrial water treatment. In textile industry, it is used as chelating agent. In presence of chlorine, it shows good stability and in presence of zinc and phosphates, it shows its corrosion inhibition properties. Hydroxyethane Diphosphonic Acid is widely used in swimming pools, industrial detergents, cooling water systems, industrial water treatment, metal surface treatment, stabilizer in H2O2 solutions and sequestering agent in textile auxiliaries. It can be offered in bulk, packed in drum of 250kg net. When stored in proper storage conditions, it has a shelf life of 12 months.

Detailed Product Description

Colorless to light yellow transparent liquid HEDP Acid, 50%-60% CAS 2809-21-4 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid

Chemical Name:1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

Abbreviation: HEDP

Synonym: HEDPA, HEDP(A), Etidronic Acid

CAS No.: 2809-21-4

Molecular Formula: C2H8O7P2

Molecular weight: 206.02 g/mol


Items of Analysis

Standard Spec.


Colorless to light yellow transparent liquid

Active content (HEDP), %

50.0 - 60.0

Phosphorous Acid (as PO33-), %

2.0 Max

Phosphoric Acid (as PO43-), %

0.8 Max

Density (@ 20ƒ), g/cm3

1.41 - 1.47

Chloride (as Cl), %

0.5 Max

pH (1% water solution, @ 25ƒ)

2.0 Max

Iron (as Fe), ppm

10.0 Max

Ca2+ Sequestration,(as CaCO3 mg/g )

500 Min

Safety Protection:

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

Tag : cas 2809-21-4, 1-diphosphonic acid

Trade Information
  • Main Domestic Market
  • All India

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