アルキルスルホナートイオンを対陰イオンとする陽イオン染料の抽出挙動

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タイトル別名
  • Liquid-liquid distribution behavior of ion-associates of dye cations with alkylsulfonates as counter-ions
  • アルキルスルホナート イオン オ ツイ インイオン ト スル ヨウイオン セン

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The extraction of ion-associates of alkylsulfonate ions (carbon number : 213) with eight cationic dyes is described. Distribution between aqueous and organic phase were determined. A linear relationship was obtained between the log Kex and the number of carbon atoms in the alkylsulfonate ions, and the contribution of a methylene group to the extraction constant, a so-called group contribution value (π value), was on average 0.62. The order of the extractability of the ion-associates was ethyl violet> brilliant green> Hofmann's violet> crystal violet> malachite green> new fuchsin> methylene blue> para rosaniline, and the difference of the log Kex between two successive dyes averaged 1.17, 0.60, 0.59, 0.85, 2.69, 0.47, and 1.50, respectively. These differences are in good agreement with those deduced from the group contribution values of amino-, dimethylamino-, and diethylamino-groups and the resonance effect. The order of the extractability of the ion-associates was isobutylmethylketone> 1, 2-dichloroethane> dichloromethane> chloroform>ο-dichlorobenzene> chlorobenzene> benzene> toluene> carbontetrachloride, and the difference of the log Kex between two successive solvents averaged 1.3, 0.6, 0.7, 1.1, 2.5, 2.3, 0.8, and 1.0, respectively. The plot of the average values of Δ log Kex (solvent-benzene) against ET parameters shows a good linearity.

収録刊行物

  • 分析化学

    分析化学 32 (2), 91-99, 1983

    公益社団法人 日本分析化学会

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