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HEDP

Chemical name:1-Hydroxyethylidene-1,1-Diphosphonic Acid(HEDP)

Abbreviation: HEDP

Molecular Formula: C2H8O7P2

Molecular Weight: 206

CAS Number: 2809-21-4

Application Notes: Noted for its excellent CaCO3 scale inhibition and chlorine stability.

Recommended Uses: Cooling water treatment, boiler treatment, I & I cleaners, swimming pool stain prevention, metal ion control

Typical Properties:

Appearance

Water white to pale yellow liquid

Active Acid (%)

60.0 min

Phosphorous acid as PO33- (%)

2.0 max

Phosphorous acid as PO43- (%) 

0.8 max

Chloride (as Cl,%)

0.5 max

Sequestrant value(CaCO3)mg/g as product at PH 11-12

500 min

PH(1% solution)@20C

2.0 max

Density at 20C,g/cm3

1.440 min

Iron, as Fe (ppm):

35.0max

Colour APHA (Hazen):

80 max

 

 

 

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