Synthesis and Characterization of an Organic Reagent 4-(6-Bromo-2-Benzothiazolylazo) Pyrogallol and Its Analytical Application

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  • Naser N. A.
    Department of Chemistry, College of science, University of Kufa
  • Kahdim K. H.
    Department of Chemistry, College of science, University of Babylon
  • Taha D. N.
    Department of Chemistry, College of science, University of Babylon

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Organic reagent, 4-(6-Bromo-2-Benzothiazolylazo) pyrogallol (4-Br-BTAP), was synthesized by coupling reaction of diazotized 2-amino-6-bromobenzothiazole with pyrogallol and purified using ethanol recrystallization method. Analysis and characterization of synthesized product were carried out using melting point, elementary analysis, IR and H1-NMR. Dissociation constants of the organic reagent were calculated by spectrophotometric method. Absorption spectra of the 4-Br-BTAP in solvents of different polarities were investigated. Analytical application of 4-Br-BTAP was established with Cu (II) and Pd (II).

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