Distribution of Alkali Metal Picrates between Water and Methyl Isobutyl Ketone

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概要

• 論文の詳細を見る

• As regards the distribution of alkali metal picrates between water and methyl isobutyl ketone, distribution ratios of alkali metals and acid species were determined in the pH range 1.5–8.5. The extraction curves are almost the same for each alkali metal. Association constants of the picrates and the dissociation constant of picric acid in the organic phase were determined conductometrically. The association constants of picrates in the aqueous phase were determined with distribution coefficients by means of a solvent extraction method. The results obtained show that the picrates exist mainly in a dissociated form in both phases, whereas picric acid exists in a weakly dissociated form in the organic phase. The extractability of picrates is discussed on the basis of the extraction parameter proposed and compared with that of the nitrobenzene system.

• 公益社団法人 日本化学会の論文

著者

• Iwachido Tadashi

  College of Liberal Arts, Okayama University

関連論文

• Stoichiometry determination of Catio-macrocyclic complexes based on the 1H NMR chemical shift of the cation-coordinated water molecules.
• The extractability of potassium as picrates (KPic and K(L)Pic, L:18-Crown-6) and its relationship to the properties of the solvents.
• Studies of the Interaction between the Picrate Ion and Alkali Metal Ions
• The extraction of alkali metal picrates into benzene by means of 18-crown-6.
• Distribution of Alkali Metal Picrates between Water and Methyl Isobutyl Ketone

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