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Issue 11, 2008
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Purity specification methods for ionic liquids

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In the last decade, ionic liquids have shown great promise in a plethora of applications. However, little attention has been paid to the characterisation of the purity of these fluids, which has ultimately led to non-reproducible data in the literature. In order to facilitate specification of ionic liquids, a number of analytical protocols with their limits of detection (where available) have been compiled, including methods of other authors. In particular, quantitative methods have been developed and summarised for the determination of the total ionic liquid content, residual unreacted ionic liquid starting material and by-products (amines, alkylating agents, inorganic halides), solvents from extraction procedures and water, in addition to decomposition products and total volatiles.

Graphical abstract: Purity specification methods for ionic liquids

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Article information

20 May 2008
21 Jul 2008
First published
18 Sep 2008

Green Chem., 2008,10, 1152-1161
Article type

Purity specification methods for ionic liquids

A. Stark, P. Behrend, O. Braun, A. Müller, J. Ranke, B. Ondruschka and B. Jastorff, Green Chem., 2008, 10, 1152
DOI: 10.1039/B808532C

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