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HEDP Acid

(1-hydroxyethylidene) diphosphonic acid; Etidronic acid

  • Cas Number :2809-21-4
  • Chemical Formula : C2H8O7P2
  • Molecular Weight : 206.03

HEDP Acid

1-Hydroxyethylidene-1,1-diphosphonic acid, 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 temperature 250℃.

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Description:
Colourless to pale yellwo, clear liquid
Sp. gr. ar 25 deg C:
1.330 - 1.370
pH of 1% solution:
Less than 2
Active contents:
50.0% min.
O.P.A.:
2.5% max.
Sequestering value:
410.0 min. (at pH 11.0)