Pigment yellow 185 is an organic compound that is used as a green yellow pigment and optical brightener. It is classified as a derivative of isoindoline. This yellow green compound is prepared by addition of ammonia to phthalonitrile to give diiminoisoindole, which in turn condenses first with N-methylcyanoacetamide and then with barbituric acid.[1]
References
- ^ Radtke, Volker; Erk, Peter; Sens, Benno (2009). "Isoindoline pigments". In Faulkner, Edwin B.; Schwartz, Russell J. (eds.). High Performance Pigments (2nd ed.). Wiley-VCH. pp. 221–241. doi:10.1002/9783527626915.ch14. ISBN 978-3-527-62691-5.
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