Phenolphthalein

Phenolphthalein consists of three phenol rings attatched to a common carbon atom.

Chemical Formula: C₂₀H₁₄O₄

Other names: Brooklax, 3,3-bis(4-Hydroxyphenyl)-3H-isobenzofuran-1-one

Layman's explanation: Phenolphthalein was first made in 1880. The compound is a good pH indicator because it turns red in a solution with a pH above 8. Phenolphthalein can also be used as a laxative. When used for therapeutic purposes it can cause hypersensitivity. Phenolphthalein also colors urine and other bodily excretions a pink or red color when it is present in the body.

Keywords: pH indicator, laxative

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