CAS: 2809-21-4
1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid
Molecular formula: C2H8O7P2
1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid
Molecular formula: C2H8O7P2
Use: HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer etc.
Package: It is usually packed in 30kg or 250kg plastic drum
Specification:
|
Items |
Index
|
|
|
Appearance
|
Colorless or light yellow clear liquid
|
White crystal powder
|
|
Active content (HEDP)%
|
58.0-62.0
|
90.0 min
|
|
Phosphorous acid (as PO33-)%
|
2.0 max
|
0.5 max
|
|
Phosphoric acid (asPO43- )%
|
0.8 max
|
0.5 max
|
|
Chloride (as Cl-)%
|
0.01 max
|
0.01 max
|
|
pH (1% solution)
|
2 max
|
2 max
|
|
Density (20°C)g/cm3
|
1.40
|
-
|
|
Fe ion ppm
|
10 max
|
20 max
|
|
Colour APHA (Hazen)
|
40 max
|
-
|