Titrations with extractive end-points: The permanganate titration |
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Authors: | N.A. Gibson R.A. White |
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Affiliation: | Chemistry School, Sydney University, Sydney,N.S.W.Australia |
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Abstract: | A method for titrations with KMnO4 in coloured solutions is recommended, in which the permanganate ion is extracted as Ph3MeAsMnO4 at the end-point. The procedure is satisfactory for titrations with , and KmnO4, and for the back-titration of KmnO4, in the presence of coloured ions of molar concentrations up to 400 times that of the substance titrated. A stable permanganate, Ph3MeAsMnO4.H2O, has been isolated. |
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