HEDP water treatment chemicals

1.HEDP as a scale & corrosion inhibitor.
2.HEDP as one of water treatment chemicals.

1-Hydroxyethylidene-1,1-Diphosphonic acid
HEDP water treatment chemicals

Abbreviation:

HEDP
CAS No. 2809-21-4
Molecular weight: 206
Structural Formula


Specifications:
items
index
Appearance
Colorless or light yellow transparent liquid
White crystal powder
Active content (HEDP)%
58.0-62.0
90.0 min
Phosphorous acid (as PO
3
3-)
%
2.0 max
0.5 max
Phosphoric acid (asPO
4
3-
)%
0.8 max
0.5 max
Chloride (as Cl
-
)%
0.01 max
0.01 max
pH (1 solution)
2 max
2 max
Density (20)g/cm
3
1.430 - 1.460
-
Fe ion ppm
10 max
20 max

Applications:
HEDP
mainly used as a scale & corrosion inhibitor, chelating (sequestrating), deflocculating agent in cooling and boiler water treatment, textile dying, detergents etc.

Packing:
Normally in 250kg net plastic drum, IBC's can also be used as required.
HEDP
is available with lower chloride level, lower Iron level, lower arsenic level .