pyrazolone dye
pyrazolone dye
[pə′raz·ə‚lōn ‚dī] (organic chemistry)
An acid dye containing both ‒N=N‒ and =C=C= chromophore groups, such as tartrazine; used for silk and wool.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.