Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid（HEDP Na2）
|
CAS NO. |
7414-83-7 |
|
Dequest |
2016BD |
|
Molecular Formula: |
C2H6O7P2Na2 |
|
Molecular weight: |
250 |
|
Structural Formula: |
 |
Properties:
Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is an organophosphorus acid corrosion inhibitor, and it can chelate with Fe, Cu, and Zn ions, it can dissolve the oxidized materials, it has right scale and corrosion inhibition effects even under 250℃, it is stable under high pH value, not easy to be hydrolyzed, not easy to be decomposed under normal light and heat condition, its acid/alkaline and chlorine oxidation tolerance are better than that of other organophosphate-on acids. Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid can form six-ring chelating compounds with metal ions in the water system, Ca2+ in particular. Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid has good scale inhibition effects and apparent dissolution threshold effects. When used with other Water Treatment Chemicals, the synergistic results are better.
Specification:
|
items |
index |
|
|
Appearance |
Colorless to yellowish transparent liquid |
White powder |
|
Active content（HEDP）% ≥ |
16.5 |
74.0-79.0 |
|
Active content (HEDP Na2)% ≥ |
20.0 |
89.8 |
|
density (20℃)g/cm3 |
1.12-1.22 |
-- |
|
Fe3+ μg/g ≤ |
-- |
35 |
|
Phosphorous acid (asPO33-)% ≤ |
-- |
2 |
|
Moisture，% |
-- |
3-6 |
|
PH (1% water solution) |
4.0-6.0 |
4.0-6.0 |
Application scope and method of Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid：
Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is widely used in circulating cool water system, medium, and low-pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc. In the light woven industry, Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid is used as detergent for metal and nonmetal. In the dyeing industry, The dyes the industry fixing agent. In non-cyanide, electroplating is used as a chelating agent.
Package and Storage:
Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid plastic drum，30kg or 250kg，or confirmed by clients Storage for ten months in shady room and dry place.
Safety Protection:
Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid Weak acidity, Avoid contact with eye and skin. Once contacted, flush with water.
