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phenolphthalein

DEFINITIONS OF: phenolphthalein

1

n a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8

Type of:
laxative
a mild cathartic
acid-base indicator
an indicator that changes color on going from acidic to basic solutions
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