HEDP/1-Hydroxy Ethylidene-1,1-Diphosphonic AcidHEDP
CAS NO.: 2809-21-4
Appearance: Colorless or light yellow transparent liquid
Technical Data Sheet
Liquid 50 %min Liquid 60%min Powder 90%min
Active content (HEDP)% 50%min 60%min 90.0 min
Phosphorous acid (as PO33-)% 2.0 max 2.0 max 0.5 max
Phosphoric acid? (asPO43- )% 0.6 max 0.6 max 0.3 max
Chloride (as Cl-)% 0.01 max 0.01 max 0.05 max
PH (1% solution) 2 max 2 max 2 max
Density? (20oC)g/cm3 1.360min 1.440min /
Fe (iron) ppm 10 max 10 max 20 max
Colour APHA (Hazen) 50max 500min /
Sequestrant value(CaCO3)mg/g 450min 50max /
Active content (HEDP.H2O)% / / 98%min
Main application: 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.
Packing: liquid in 250kgs/drum ;powder in 25kgs/bag.

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