Structure elucidation of the dye Acid Red 131: complete (1)H, (13)C and (15)N NMR data assignment

Elisabetta Schievano; Ileana Menegazzo; Ester Marotta; Stefano Mammi

doi:10.1002/mrc.2765

Structure elucidation of the dye Acid Red 131: complete (1)H, (13)C and (15)N NMR data assignment

Magn Reson Chem. 2011 Aug;49(8):523-8. doi: 10.1002/mrc.2765. Epub 2011 May 6.

Authors

Elisabetta Schievano¹, Ileana Menegazzo, Ester Marotta, Stefano Mammi

Affiliation

¹ Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy. elisabetta.schievano@unipd.it.

PMID: 21547946
DOI: 10.1002/mrc.2765

Abstract

The chemistry of dyes and pigments is relevant to the textile industry, because of the importance to establish the best conditions for the finishing process and to understand the interactions among various compounds to yield the correct hue and nuances. For this reason, the molecular structure of a monoazo acid dye, C.I. Acid Red 131, was elucidated and characterized by homo- and hetero-nuclear NMR, MS, IR and UV spectroscopy techniques.

Keywords: 13C; 15N; 1H; Acid Red 131; NMR; dyes; molecular structure.