POTENTIOMETRIC TITRATIONS OF SOME AZO DYES CONTAINING A HYDROXY GROUP WITH TETRABUTYLAMMONIUM HYDROXIDE IN ACETONITRILE


SERIN S. , KURTOGLU M. Ö.

ANALYST, vol.119, no.10, pp.2213-2215, 1994 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 119 Issue: 10
  • Publication Date: 1994
  • Doi Number: 10.1039/an9941902213
  • Title of Journal : ANALYST
  • Page Numbers: pp.2213-2215

Abstract

Fifteen azo dyes containing a hydroxy group, phenol, 1-naphthol and 2-naphthol were titrated potentiometrically with tetrabutylammonium hydroxide (TBAH) at room temperature. Potentiometric titration curves of these compounds in acetonitrile with TBAH propan-2-ol-methanol are similar to those ofweak acids obtained in aqueous media with strong bases. Acetonitrile is a suitable medium for the weakly acidic compounds titrated in this work.

Fifteen azo dyes containing a hydroxy group, phenol, 1-naphthol and 2-naphthol were titrated potentiometrically with tetrabutylammonium hydroxide (TBAH) at room temperature. Potentiometric titration curves of these compounds in acetonitrile with TBAH propan-2-ol-methanol are similar to those of weak acids obtained in aqueous media with strong bases. Acetonitrile is a suitable medium for the weakly acidic compounds titrated in this work.