The analysis of dyes and dye intermediates by physico-chemical methods: I. Thin-layer chromatographic and spectrophotometric behavior of some azobenzene derivatives |
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| Authors: | J Barek A Berka V Borek |
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| Institution: | Department of Analytical Chemistry, Charles University, 128 40 Prague 2, Czechoslovakia |
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| Abstract: | Thin-layer Chromatographic behavior of 14 azobenzene derivatives was studied, suitable eluents were found, and the Rf values were determined. Spectrophotometric behavior of these substances in acetonitrile was studied, as well as the influence of acids and bases on the studied spectra. The validity of the Lambert—Beer law in a concentration region from 1 × 10?5 to 7 × 10?5 was verified. |
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