The iron (III)-catalyzed oxidation of EDTA in aqueous solution

RJ Motekaitis, AE Martell, D Hayes…

Index: Motekaitis, Ramunas J.; Martell, Arthur E.; Hayes, David; Frenier, Wayne W. Canadian Journal of Chemistry, 1980 , vol. 58, # 19 p. 1999 - 2005

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Citation Number: 41

Abstract

At temperatures above 100° C iron (III) oxidizes coordinated EDTA to ethylenediaminetriacetic acid in aqueous solution in the absence of molecular oxygen. The reaction proceeds with an activation energy of 28.6 kcal/mol, and its rate is directly proportional to the concentration of Fe (III) and inversely proportional to pH. At 125° C, the halflife of Fe (III) in the presence of excess EDTA is about 3 h at pH 9.3, but increases to> ...