Organophosphoric Antiscale and Corrosion Inhibitors, Chelant
|Appearance||Clear, Colorless to pale yellow aqueous solution||White crystal powder|
|Active content (HEDP)%||58.0-62.0||90.0 min|
|Phosphorous acid (as PO33-)%||1.0 max||0.8 max|
|Phosphoric acid (asPO43- )%||0.6 max||0.5 max|
|Chloride (as Cl-) ppm||100.0 max||50.0max|
|pH (1% solution)||2.0 max||2.0 max|
|Fe，mg/L||10.0 max||5.0 max|
|Colour APHA (Hazen)||30.0 max||-|
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP) 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, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(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, it is used as chelating agent. The dosage of 1-10mg/l is preferred as scale inhibitor, 10-50mg/l as corrosion inhibitor, and 1000-2000mg/l as detergent. Usually, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP) is used together with polycarboxylic acid.
Package and Storage:
liquid: 200L plastic drum,IBC(1000L),customers’ requirement.
solid: 25kg/bag,customers’ requirement.
Storage for ten months in room shady and dry place.
Acidity, Avoid contact with eye and skin, once contacted, flush with water.