1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
(HEDP)
Molecular Formula: C2H8O7P2
Molecular weight: 206.02
CAS No. 2809-21-4
Technical Data Sheet:
(1) Liquid
Appearance: Clear, Colorless to pale yellow aqueous solution
Active content (HEDP): 58.0-62.0%
Phosphorous acid (as PO33-): 2.0% max
Phosphoric acid (as PO43- ): 0.8% max
Chloride (as Cl-): 0.02% max
pH (1% water solution): 2.0 max
Density (20℃) g/cm3: 1.40 min
Fe (mg/L): 20.0 max
Ca sequestration (mg CaCO3/g): 500.0 min
(2) Powder
Appearance: White crystal powder
Active content (HEDP): 90.0% min
Active content (HEDP·H2O): 98.0% min
Phosphorous acid (as PO33-): 0.8% max
Phosphoric acid (as PO43- ): 0.5% max
Chloride (as Cl-): 0.01% max
pH (1% water solution): 2.0 max
Fe, mg/L: 10.0 max
Packing:
HEDP liquid: 200L plastic drum,IBC(1000L),customers’ requirement.
HEDP solid: 25kg/bag,customers’ requirement.
