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Iodometric Estimation of Acetylacetone in Free Form and in Complexes

Authors
Journal
Microchemical Journal
0026-265X
Publisher
Elsevier
Publication Date
Volume
57
Issue
1
Identifiers
DOI: 10.1006/mchj.1997.1491

Abstract

Abstract The iodoform reaction is recommanded for the estimation of acetylacetone. In 20 ml moderately alkaline buffer solution, 0.04–0.40 mmole acetylacetone is oxidized with 15–20 ml 0.2 N KI 3solution at a sufficiently slow delivery rate (0.03 ml·s −1or less) under efficient stirring during addition of the reagent. Subsequently, the solution is acidified with 10 ml 3.3 Nhydrochloric acid and the excess iodine is back-titrated with thiosulfate. The method is also suitable for determination of the acetylacetone content of metal complexes (10–70 mg).

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