1-Hydroxyethylidene-1,1-Diphosphonic acid（HEDP）
CAS No. 2809-21-4 Molecular Formula: ? C2H8O7P2? ? ? ? ? ? ? ? ?
Abbreviation: HEDP Molecular weight: 206
Structural Formula
Spceification:
items index
Appearance Colorless or light yellow transparent liquid White crystal powder
Active content (HEDP)% 58.0-62.0 89.0 min
Phosphorous acid (as PO33-)% 2.0 max 0.5 max
Phosphoric acid? (asPO43- )% 0.8 max 0.5 max
Chloride (as Cl-)% 1.0 max 0. 1 max
pH (1％ solution) 2 max 2 max
Density? (20℃)g/cm3 1.430 - 1.460 -
Fe ion ppm 10 max 20 max
Application:
It is mainly used as a Scale & Corrosion Inhibitor, chelating (Sequestrating), deflocculating agent in Cooling and Boiler water treatment, Textile Dying, Detergents etc.
Packing:
HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients. Storage for ten months in room shady and dry place. |
