The oxidation of benzidine, o,o′-tolidine and o,o′-dianisidine by manganese dioxide

A. Berka, M. Kořínková, J. Barek

Research output: Contribution to journalArticle

7 Citations (Scopus)


The oxidation of benzidine, o,o′-tolidine, and o,o′-dianisidine by manganese dioxide was studied in an acidic medium. It has been shown that the studied substances are quantitatively oxidized by the reagent to the corresponding quinonediimines and that this reaction can be utilized for the indirect titrimetric determination of benzidine and o,o′-tolidine, based either on ferrometric titration of unconsumed manganese dioxide or on ascorbinometric titration of the quinonediimine formed.

Original languageEnglish
Pages (from-to)38-44
Number of pages7
JournalMicrochemical Journal
Issue number1
Publication statusPublished - 1 Jan 1976
Externally publishedYes


ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this