Disodium Of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

Disodium Of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

  • Disodium Of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Packaging: Liquid: 200L plastic drum,IBC(1000L),customers` requirement. Storage for ten months in shady room and dry place.
Place of Origin: China

Product Description

Disodium Of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDPNa2)

 

CAS No. 7414-83-7              

Molecular formula: C2H6O7P2Na2                                                  Molecular weight: 250

Structural formula


 

Properties

HEDPNa2 is an organophosphonic acid corrosion inhibitor, it can chelate with Fe, Cu, and Zn ions, it can dissolve the oxidized materials, it has good 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 chloride oxidation tolerance are better than that of other organophosphonic acids. HEDPNa2 can form six-ring chelating compounds with metal ions in water system, Ca2+ in particular. HEDPNa2 has good scale inhibition effects and obvious dissolution threshold effects. When used with other water treatment agents, the synergistic effects is better.

 

Specification

Items

Index

Appearance

Colorless to yellowish transparent liquid

White powder

Active content(HEDP)%

16.5min

74.0-79.0

Active content(HEDPNa2)%

20.0min

89.8min

Phosphorous acid(PO33-)%

--

3max

pH (1% water solution)

4.0-6.0

4.0-6.0

Density(20)g/cm3

1.12-1.22

--

Fe,mg/l

--

35max

Moisture,%

--

3.0-6.0

 

Usage

HEDPNa2 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 light woven industry, HEDPNa2 is used as detergent for metal and nonmetal. In dyeing industry, HEDPNa2 is used as peroxide stabilizer and dye-fixing agent; in non-cyanide electroplating, HEDPNa2 is used as chelating agent. 

 

Package and storage

Liquid: 200L plastic drum,IBC(1000L),customers` requirement. Storage for ten months in shady room and dry place.

Solid: 200L plastic drum,IBC(1000L),customers` requirement. Storage for ten months in shady room and dry place.

 

Safety protection

Weak acidity, avoid contact with eye and skin, once contacted, flush with water.

 

Keywords:

HEDPNa2

 

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