Abstract
THE extraction of water and acids by the liquid cation exchanger dinonylnaphthalene sulphonic acid (HDNNS) dissolved in heptane has recently been investigated for two different concentrations of HDNNS and over a large range of concentrations for nitric, hydrochloric, perchloric and sulphuric acids1. The experiments have been performing by shaking samples of HDNNS dissolved in heptane with various water–acid mixtures. After centrifugation and separation of the two phases, both were analysed for acid by titration with alkali and the organic phase analysed for water, using the modification of the Karl Fischer method due to Axel Johansson2,3.
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References
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HÖGFELDT, E. Hydration in Liquid and Solid Cation Exchangers. Nature 210, 941–942 (1966). https://doi.org/10.1038/210941a0
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DOI: https://doi.org/10.1038/210941a0
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