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HEDP

Category : Catalyst and Auxiliary/Water Treatment Chemicals
CAS NO : 2809-21-4          EC NO : 220-552-8
MF : C2H8O7P2
Main Specifications :
Synonyms : 1-Hydroxyethane-1,1-diphosphonic Acid;Etidronic acid;HEDP;HEDPA; Hydroxy Ethylidene-1,1-Diphosphonic Acid;1-Hydroxy Ethylidene-1,1-Diphosphonic Acid;1-Hydroxyethylidene diphosphonic Acid;1-hydroxy ethylene-1,1-diphosphonic acid;1-HYDROXYETHYLIDENEDI(PHOSPHONIC ACID);disodium (1-hydroxyethane-1,1-diyl)bis[hydrogen(phosphonate)];(1-hydroxyethane-1,1-diyl)bis(phosphonate);Hydroxyethylidenedi(phosphonic acid);Hydroxyethylidine Diphosphonic Acid;
HEDP
Uses : Cooling water treatment,boiler treatment,I & I cleaners,swimming pool stain prevention,metal ion control
Molecular Structure:HEDP 2809-21-4
Product description:
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)@20°C
2.0 max
Density at 20°C,g/cm3
1.440 min
Iron, as Fe (ppm):
35.0max
Colour APHA (Hazen):
80 max
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