Information about organic pigments and dyes

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  • Typical processes


Typical processes-organic dyes and pigments.jpg


  • Dyes and Pigments Flowsheet


  • Diazotisation and azo coupling:


Dyes and Pigments Flowsheet.jpg


  • Halogenation:


Dyes and Pigments Flowsheet3.jpg


Dyes and Pigments Flowsheet2.jpg


  • N-acylation


N-acylation-organic dyes and pigments.jpg


  • Nitration


Nitration-organic dyes and pigments.jpg


  • Reduction of aromatic nitro compounds


Reduction of aromatic nitro compounds.jpg


LITERATURE: BREF on Organic Fine Chemicals, Aug. 2006


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