CAS No. 2809-21-4
Molecular Formula: C2H8O7P2Molecular weight: 206.02
UN NO. 3265
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.
It can dissolve the oxidized materials on these metals' surfaces. HEDP shows excellent scale and corrosion inhibition effects under
|Appearance||Clear, Colorless to pale yellow aqueous solution|
|Active content (HEDP)%||58.0-62.0|
|Phosphorous acid (as PO33-)%||1.0 max|
|Phosphoric acid (asPO43- )%||0.6 max|
|Chloride (as Cl-) ppm||100.0 max|
|pH (1% solution)||2.0 max|
|Colour APHA (Hazen)||30.0 max|
|Acetic acid %||0.5 max|
|Ca sequestration (mg CaCO3/g)||500.0 min|
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.. In light woven industry,
HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and
dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent.
Package:200L plastic drum,IBC(1000L), and as customers' requirement.