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1-Hydroxyethylidene-1,1-Diphosphonic Acid

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Product Description

PRODUCT

1-Hydroxyethylidene-1,1-Diphosphonic Acid

CAS #

2809-21-4

SYNONYM

HEDP; Phosphonic acid, P,P'-(1-hydroxyethylidene)bis-; Phosphonic acid, (1-hydroxyethylidene)bis-

FORMULA

C2H8O7P2

Product Specifications

PHYSICAL FORM

Clear, colorless to pale yellow liquid

PHOSPHOROUS ACID

<= 2.5% wt

SPECIFIC GRAVITY AT 25°C

1.44 (+- 0.01)

ACTIVE CONTENT

60 (+-1.0)% wt.

COLOR (APHA)

<= 50

PH (1% SOLUTION)

<= 2.0

IRON AS FE

< 35 ppm

FREEZING POINT

-25C

CHLORIDE

<= 1.0% wt.

MOLECULAR WEIGHT

206.03

NOTES

Used as scale and corrosion inhibitor, deflocculant, seqestrant, water stabilizer in water treatment pipeline, and detergent under high temperature and high pH value.

Use: CHELATING

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