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[fee-nawl-suhl-fohn-thal-een, -ee-in, -fthal-, -nol-] /ˌfi nɔlˌsʌl foʊnˈθæl in, -i ɪn, -ˈfθæl-, -nɒl-/
noun, Chemistry.
a bright to dark red crystalline compound, C 1 9 H 1 4 O 5 S, slightly soluble in water, alcohol, and acetone: used as an acid-base indicator and as a diagnostic reagent in medicine.
Also called phenol red.
Origin of phenolsulfonephthalein Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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phenol red in Medicine

phenol red n.
A bright to dark red, water-soluble crystalline dye used as an acid-base indicator and to test kidney function and renal blood flow. Also called phenolsulfonphthalein.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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