The synthesis, characterization and investigation of absorption properties of disperse disazo dyes containing pyrazole and isoxazole

In this study, new heterocyclic disazo disperse dyes, substituted with methyl, nitro and chloro groups at their o-, m-, p- positions were synthesized (4a-4j). These newly synthesized ten disazo disperse dyes were characterized by elemental analysis and spectral techniques. Spectroscopic data for novel synthesized dyes, dissolved in six solvents, were procured. The influences of six different acidic and alkaline solutions were also reported. In addition, the absorption capability of these ten-novel heterocyclic disazo disperse dyes at their o-, m- and p- positions were explored in detail. (C) 2018 Elsevier B.V. All rights reserved