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, 75 (24), 8351-4

Drying of Organic Solvents: Quantitative Evaluation of the Efficiency of Several Desiccants

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Drying of Organic Solvents: Quantitative Evaluation of the Efficiency of Several Desiccants

D Bradley G Williams et al. J Org Chem.

Abstract

Various commonly used organic solvents were dried with several different drying agents. A glovebox-bound coulometric Karl Fischer apparatus with a two-compartment measuring cell was used to determine the efficiency of the drying process. Recommendations are made relating to optimum drying agents/conditions that can be used to rapidly and reliably generate solvents with low residual water content by means of commonly available materials found in most synthesis laboratories. The practical method provides for safer handling and drying of solvents than methods calling for the use of reactive metals, metal hydrides, or solvent distillation.

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