Commercialized Pigments Past and Present

The following is a complete compilation of chemical structures of disazoconden-sation pigments with an assigned Colour Index (Cl) Pigment Name. Also given are Chemical Abstracts Registration Numbers, as well as Cl constitution numbers (if known). 

All commercial yellow pigments are of type I and contain 3-amino-4-Cl-benzoic acid as diazobase. 

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