1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) CAS 2809-21-4

Description

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CAS: 2809-21-4
Synonyms: HEDP,HEDPA,Etidronic Acid
Einecs: 220-552-8
Molecular Formula: C2H8O7P2
Grade: 50%,60%,95%
Package: 25kg/bag,250kg/drum,1250mt/IBC or as required

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Details

The solid is white crystals. The liquid is colorless to light yellow transparent liquid. It is easily soluble in water, methanol and ethanol. Hydroxyethylidene diphosphonic acid is a chemical raw material, commonly used in industrial water treatment, household cleaning products and personal care products.

Specification:

Items	Specification
Appearance	Clear, Colorless to pale yellow aqueous solution	White crystal powder
Active content (HEDP)%	58.0-62.0	90.0 min
Active content (HEDP·H2O)%	–	98.0 min
Phosphorous acid (as PO33-)%	2.0 max	0.8 max
Phosphoric acid (as PO43- )%	0.8 max	0.5 max
Chloride (as Cl-)%	0.02 max	0.01 max
pH (1% water solution)	2.0 max	2.0 max

Application:

Water treatment: used in cooling water, boiler water, and circulating water treatment as corrosion inhibitors and scale inhibitors to prevent scaling and corrosion.

Cleaning agent: used for cleaning metal and non-metal materials to remove scale and rust.

Oil and gas industry: used to prevent scaling of equipment and pipelines, and can also be used as a stabilizer for oil well acidification.

Textile industry: used as a chelating agent to soften water quality and prevent metal ions from affecting dyes and fabrics.

Papermaking industry: used as a bleaching stabilizer to prevent the side effects of metal ions during the bleaching process.

Medicine and cosmetics: used as a chelating agent to stabilize the active ingredients of the formula.

Package:

Solid:25kg/bag

Liquid:250kg/drum,1250kg/IBC

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