Akademik

Phenolphthalein

A compound used as a laboratory reagent and acid-base indicator and also used in over-the-counter (OTC) laxative preparations. Phenolphthalein may be a carcinogen (cancer-causing agent). Feeding of phenolphthalein caused cancer in multiple organs in multiple species of experimental animals. The US government in 2000 classified phenolphthalein as "reasonably anticipated to be a human carcinogen."

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Obtained by the action of phenol on phthalic anhydride; used as a hydrogen ion indicator and formerly used as a laxative.

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phe·nol·phtha·lein .fēn-əl-'thal-ē-ən, -'thal-.ēn, -'thāl- n a white or yellowish white crystalline compound C₂₀H₁₄O₄ that is used in analysis as an indicator because its solution is brilliant red in alkalies and is decolorized by acids and that is used in medicine as a laxative

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phe·nol·phthal·ein (fe″nol-thalґēn) a cathartic and pH indicator, with a range of 8.5 (colorless) to 9.0 (red).

Medical dictionary. 2011.