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Synthesis, Spectral Properties and Applications of Some Mordant and Disperse Mono Azo Dyes Derived from 2-amino-1, 3-benzothiazole

Author Affiliations

  • 1Department of Chemistry, Laxminarayan Institute of Technology, Nagpur 440033, INDIA
  • 2Department of Chemistry, Science College, Nagpur 440012, INDIA
  • 3Department of Chemistry, Laxminarayan Institute of Technology, Bharat Nagar, Amravati Road, Nagpur, INDIA

Res.J.chem.sci., Volume 3, Issue (10), Pages 81-87, October,18 (2013)

Abstract

Mono azo dyes were synthesized using diazotized 2-amino-1, 3-benzothiazole followed by coupling with different substituted anilines and phenols in appropriate reaction condition. Dyes were readily obtained in 65-85 % yield in very pure form. The structures of newly prepared dyes were confirmed from FT-IR, 1H-NMR, LC-MS, UV-Vis spectroscopic technique. The UVVisible spectras of new mono azo dyes in suitable solvent was investigated in terms of structural property relationship. The dyeing assessment of all the dyes was evaluated on various fabrics. The results revealed that a better hue is obtained on cotton mordant fibres. The prepared azo dyes were tested as an indicator for different types of titrations. It was found that some of the dyes are very good indicators for acid – base titrations, giving a very sharp and distinct end point. Antimicrobial evaluation revealed that the dyes show good antibacterial activity.

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