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phenolsulfonephthalein

[fee-nawl-suhl-fohn-thal-een, -ee-in, -fthal-, -nol-] /ˌfi nɔlˌsʌl foʊnˈθæl in, -i ɪn, -ˈfθæl-, -nɒl-/
noun, Chemistry
1.
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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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