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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2012, Volume 63, Issue 1,





Tudora BALTAC, Gabriela VLAD, Ion SEBE
The Synthesis of Some Food Azo Dyes

Abstract:

The present paper describes the synthesis of some bis-azo dyes which can be used as food dyes. They were obtained by the diazotization of a monoazo component of the 4-mono-azobenzene type followed by coupling with: b-naphtol, Schäffer acid, salt R and acid g. The monoazo components resulted from the diazotization of the sulphanilic acid and the coupling with: aniline, cresidine and ortho-toluidine. All the synthesized dyes were later analysed via chromatography, IR and UV-Vis spectrometry and food analysis. Keywords: food azo dyes, FT-IR and UV-VIS spectra


Issue: 2012, Volume 63, Issue 1
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