cresol red
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Related to cresol red: phenol red, Thymol blue
cresol red
[′krē‚sȯl ′red] (organic chemistry)
C21H18O5S A compound derived from o-cresol and used as an acid-base indicator; color change is yellow to red at pH 0.4 to 1.8, or 7.0 to 8.8, depending on preparation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.