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Diphenylbenzidine sulfonic acid

Sulfonic acid derivatives of diphenylamine and diphenylbenzidine are suitable indicators in many redox titrations. The structures of these indicators are shown below ... [Pg.67]

The interest in the application of indicators in oxidation-reduction titrations has followed on the discovery that the familiar color change undergone by diphenylamine on oxidation could be used to determine the end-point of the titration of ferrous ion by dichromate in acid solution. Diphenylamine, preferably in the form of its soluble sulfonic acid, at first undergoes irreversible oxidation to diphenylbenzidine, and it is this substance, with its oxidation product diphenylamine violet, that constitutes the real indicator. ... [Pg.290]

See other pages where Diphenylbenzidine sulfonic acid is mentioned: [Pg.333]    [Pg.777]    [Pg.358]    [Pg.597]    [Pg.597]    [Pg.333]    [Pg.777]    [Pg.358]    [Pg.597]    [Pg.597]   
See also in sourсe #XX -- [ Pg.358 ]



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Diphenylbenzidine

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