Analysis of Fast and Slow Acid Dissociation Equilibria of 3′,3″,5′,5″-Tetrabromophenolphthalein and Determination of Its Equilibrium Constants by Capillary Zone Electrophoresis

• Published in: Analytical Sciences Vol. 29; no. 11; pp. 1067 - 1073
• Main Author: TAKAYANAGI, Toshio
• Format: Journal Article
• Language: English
• Published: Singapore The Japan Society for Analytical Chemistry 2013; Springer Nature Singapore; Nature Publishing Group
• Subjects: 3′,3″,5′,5″-Tetrabromophenolphthalein; acid-dissociation constant; Analytical Chemistry; Capillary zone; capillary zone electrophoresis; Chemistry; Electrophoresis; less-soluble substance; slow equilibrium; 3′,3″,5′,5″-Tetrabromophenolphthalein; capillary zone electrophoresis; slow equilibrium; less-soluble substance; acid-dissociation constant

Acid dissociation constants of 3′,3″,5′,5″-tetrabrompohenolphthalein (TBPP) were determined in an aqueous solution by capillary zone electrophoresis at an ionic strength of 0.01 mol/L. Two steps of the fast acid-dissociation equilibria including precipitable species of H2TBPP were analyzed at a weak...