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Relevant parameters for assessing the environmental impact of some pyridinium, ammonium and pyrrolidinium based ionic liquids |
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| Authors: | Deng Yun Besse-Hoggan Pascale Husson Pascale Sancelme Martine Delort Anne-Marie Stepnowski Piotr Paszkiewicz Monika Gołębiowski Marek Costa Gomes Margarida F |
| Institution: | a Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, UMR 6296, F-63171 Aubière, France b CNRS, Institut de Chimie de Clermont-Ferrand, UMR 6296, F-63171 Aubière, France c Institute for Environmental and Human Health Protection, University of Gdansk, ul. Sobieskiego 18, 80-952 Gdańsk, Poland |
| Abstract: | Several physico-chemical properties relevant to determine the environmental impact of ionic liquids - aqueous solubility, octanol/water partition coefficient, chromatographically derived lipophilicity and infinite dilution diffusion coefficients in water - were measured in ionic liquids based on pyridinium, ammonium and pyrrolidinium cations with bis(trifluoromethylsulfonyl)imide anions. The influence of the presence of hydroxyl or ester groups in the physico-chemical properties of these liquids was checked. It appeared that the presence of functional oxygenated moieties reduces the lipophilicity of ionic liquids and so decreases the risk of bioaccumulation in environment. |
| Keywords: | Aqueous solubility Octanol/water partition coefficient Relative lipophilicity Infinite dilution diffusion coefficient Ionic liquids Functional group |
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