Specification :

Chemical Name: 1-Hydroxyethylidene-1, 1-diphosphonic Acid
Abbreviation: HEDP( 60min) CAS Number: 2809-21-4
Molecular Formula: C2H8O7P2
Molecular Weight: 206
Application Notes: Noted for its excellent CaCO3 scale inhibition and chlorine stability is based on hydroxyl ethylidene ( 1, 1-diphosphonic acid) and is approved for applications in which boiler steam comes in contact with food.
Recommended Uses: Cooling water treatment, boiler treatment, I & I Cleaners, swimming pool, stain prevention, metal ion control.
Specification:
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 ( mgCaCO3/ g ) 500 min
pH( 1% solution) 2.0 max
Density at 20° C, g/ cm3 1.440 min
Iron, as Fe ( ppm) 35.0max
Colour APHA ( Hazen) 80 max