red lake C pigment

red lake C pigment

[′red ¦lāk ′sē ‚pig·mənt]
(materials)
An organic azo pigment; made by coupling the diazonium salt (barium or sodium) of ortho-chloro-meta-toluidine-para-sulfonic acid with β-naphthol; used to color inks, plastics, and rubbers.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.