1-Hydroxyethane-1,1-diphosphonic Acid CAS NO.2809-21-4

Chemical name:1-Hydroxyethylidene-1,1-Diphosphonic Acid(HEDP) Abbreviation: HEDP Molecular Formula: C2H8O7P2 Molecular Weight: 206 CAS Number: 2809-21-4 Application Notes…

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