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  Chemistry of Carbon Compounds: A Modern Comprehensive Treatise - Google Books

  https://books.google.de/books?id=t_sSAAAAIAAJ&pg=PA714#v=onepage

  Keine Beschreibung vorhanden.

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  Chemistry of Colour - M. Satake, Y. Mido - Google Books

  https://books.google.de/books?id=FA4hOk5KJBgC

  Colour has fascinated man ever since he was able to see a coloured object. When Perkin manufactured the fast synthetic dye in 1857, little was known of the chemistry of dyes and about dependence of colour on structure. The principles concerning this…

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  Bromocresol Green sodium salt | CAS 62625-32-5 | SCBT - Santa Cruz Biotechnology

  http://www.scbt.com/datasheet-206036-bromocresol-green-sodium-salt.html

  Buy Bromocresol Green sodium salt (CAS 62625-32-5), a dye used as a pH indicator, from Santa Cruz Biotechnology. MF: C21H13Br4NaO5S, MW: 720.00

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  Category:Aromatic hydrocarbons – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Aromatic_hydrocarbons?uselang=de

  Keine Beschreibung vorhanden.

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  Chemie der Farbstoffe und Pigmente - synthetische organische Farbmittel

  http://www.2k-software.de/ingo/farbe/sorg.html

  This page tells you a bit about usage and synthesis of natural and synthetic coloured compunds (in german).

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