HEDP--1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Abbreviation: HEDP
Chemical Name: 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Synonyms: HEDP(A); Etidronic Acid; 1-Hydroxy-1,1-Ethanediyl Ester; Dequest 2010
Molecular Formula: C2H8O7P2
Molecular Weight: 206.02
CAS Number: 2809-21-4
Application Notes: Noted for its excellent CaCO3 scale inhibition and chlorine
stability.
Recommended Uses: Cooling water treatment, boiler treatment,
Industrial & institutional cleaners, swimming pool stain prevention, metalion
control
Packing: Liquid: 200L plastic drum, IBC(1000L), customers’ requirement.
Solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag,
or confirmed by clients.
Specification:
|
Appearance
|
Clear, colorless to pale yellow aqueous solution
|
White crystal powder
|
|
Active content (HEDP)%
|
58.0-62.0
|
90.0min
|
|
Phosphorous acid (as PO33-)%
|
2.0 max
|
2.5 max
|
|
Phosphoric acid (asPO43- )%
|
0.8 max
|
0.7 max
|
|
Chloride (as Cl-) ppm
|
100.0 max
|
100.0 max
|
|
pH (1% solution)
|
2.0 max
|
2.0 max
|
|
Density (20℃)g/cm3
|
1.40 min
|
-
|
|
Fe mg/L
|
10.0 max
|
20.0 max
|
|
Colour APHA (Hazen)
|
40.0 max
|
-
|