HEDP(1-hydroxyethlidene-1,1-phosphonic acid)

Typical Applications :
HEDP is widely used in electric power, chemical industry, metallurgy, fertilizer and other industrial cooling water system and in the low-pressure boiler, oil field and pipeline water scale and corrosion inhibition; in the textile industry, can be used for cleaning metal and non-metallic agent, peroxide bleaching and dyeing industry, stabilizer and dye-fixing agent, non-cyanide electroplating industry complexing agent. The general use as scale inhibitor HEDP concentration of 1 ~ 10mg / L, as the concentration of corrosion inhibitor general use of 10-50mg / L; for general use cleaning agent concentration of 1000 ~ 2000mg / L; usually associated with polycarboxylic acid type dispersing agent with the scale.

Acetic acid                                1.0%max           

Ca sequestration mg CaCO3/g     450min                     

Chlorides(as CL-)                 100ppm max                
Color(APHA)                         30max                     

Iron                            10.0ppm max              

Density (20)g/cm3               1.37min              

PH(1% water solution)            2max                        

Phosphoric acid (as PO43-)        1.0%max           

Phosphorous acid (as PO33-)     2.0%max              

Active Content (as HEDP)      58.0-62.0%          

Appearance                  Clear coloress to pale yellow aqueous solution 

Water Treatment:

Water Treatment:
HEDP, HEDPA, Antiscaling corrosion inhibitor. It has good scale-corrosion inhibitor effect.