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Phenolphthalein

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Definitions of Phenolphthalein

Pronunciation : Phe`nol*phthal"e*in, n.
Part of Speech : or
Definition : Defn: A white or yellowish white crystalline substance, C20H14O4, formed by condensation of the anhydride of phthalic acid and phenol. Its solution in alkalies is brilliant red, but is decolorized by acids. This reaction, being very delicate, is used as an indicator.

Phenol phthalein. (Chem.)
Source : Webster's Unabridged Dictionary, 1913

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