Rapid spectrophotometric determination of phenothiazines with molybdophosphoric acid

Sanke Gowda, H. and Ramappa, P. G. and Nayak, A. N. (1979) Rapid spectrophotometric determination of phenothiazines with molybdophosphoric acid. Analytica chimica acta, 108 (C). pp. 277-283. ISSN 0003-2670

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Abstract

A simple and rapid spectrophotometric method for the determination of six phenothiazines can be based on the formation of a coloured compound between molybdophosphoric acid and phenothiazines. The i.r. and e.s.r. spectra of the coloured compounds showed that molybdophosphoric acid oxidizes phenothiazines to a radical cation with which it then forms a coloured compound. The proposed method is employed for the determination of phenothiazines in pharmaceutical preparations. Calibration graphs are linear over ranges of about 100-2000 μg of the phenothiazine.

Item Type: Article
Subjects: C Chemical Science > Chemistry
Divisions: Department of > Chemistry
Depositing User: Dhruva Kumar
Date Deposited: 28 May 2021 06:22
Last Modified: 28 May 2021 06:22
URI: http://eprints.uni-mysore.ac.in/id/eprint/13907

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