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Heterocyclic azo compounds as analytical reagents. XXII. Spectrophotometric study of copper(II) chelate of 2-(5,5-dimethyl-4,5,6,7-tetrahydrobenzthiazolyl-2-azo)-4-ethylphenol and its analytical application

J. Kandráč

Lehrstuhl für Chemie der Pädagogischen Fakultät derKomensky-Universität, 91724 Trnava

 

Abstract: The Cu(II) chelate of 2-(5,5-dimethyl-4,5,6,7-tetrahydrobenzthiazolyl-2-azo)-4-ethylphenol was studied by spectrophotometry. The molar absorptivity of the chelate and the equil. const. for the chelation reaction were obtained by calcn. and graphical anal. based on data extd. from the curve A = f(pH). The possibilities of using the reagent as a metallochromic indicator in the detn. of Cu(II) or as a spectrophotometric reagent for Cu(II) were verified.

Full paper in Portable Document Format: 345a645.pdf (in German)

 

Chemical Papers 34 (5) 645–652 (1980)

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