Brief introduction
Hydroxyethylidenediphosphonic acid, also known as hydroxyethylidenediphosphonic acid, is referred to as HEDP 60% 98%, and the standard code is ZH111ZS. It not only has good scale inhibition performance, but also has corrosion inhibition. It is widely used for scale and corrosion inhibition of industrial circulating water in electric power, chemical industry, metallurgy and other industries, oilfield oil production and water injection, winter heating circulating water and other systems. It can be used alone or combined with other scale inhibitors and corrosion inhibitors. It is a water treatment agent with excellent performance.
Specification of HEDP
HEDP 58%-62% liquid
Appearance 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
Density g/cm3 1.43-1.47
Fe,mg/L 10.0 max
Colour APHA (Hazen) 30.0 max
Ca sequestration (mg CaCO3/g) 500.0 min
HEDP 98% solid
Appearance White crystal powderActive content(HEDP)% 90.0 min
Active content (HEDP H2O)% 98.0 min
Phosphorous acid (as PO33-)% 0.8 max
Phosphoric acid (asPO43- )% 0.5 max
Chloride (as Cl-) ppm 100.0max
pH (1% solution) 2.0 max
Fe,mg/L 5.0 max
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