Reaction rates between water and some modified rapidly-reacting Karl Fischer reagents.
Rate constants were determined for the reaction between water and various modified Karl Fischer reagents containing formamide, dimethylformamide or N-methylformamide. It was shown that the reaction rate can be increased by a factor of 100 by using a reagent containing 40% v/v formamide in pyridine compared to that obtained by use of the conventional methanolic reagent.
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Department of Analytical Chemistry, University of Umeå, S-901 87 Umeå, Sweden.