phenolphthalein
noun Etymology: International Scientific Vocabulary phenol + phthalein any of various xanthene dyes, from phthalic acid Date: 1875 a white or yellowish-white crystalline compound C20H14O4 used in analysis as an indicator because its solution is brilliant red in alkalies and is decolorized by acids and in medicine as a laxative

New Collegiate Dictionary. 2001.

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  • Phenolphthalein — IUPAC name 3,3 bis(4 hydroxyphenyl)isobenzofuran 1(3H) one …   Wikipedia

  • Phenolphthalein — Phe nol*phthal e*in, n., or Phenol phthalein Phenol phthalein(Chem.) 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 …   The Collaborative International Dictionary of English

  • Phenolphthalein — Phenōlphthaleīn, s. Phthalsäure …   Kleines Konversations-Lexikon

  • phenolphthalein — [fē΄nōl thal′ēn΄, fē΄nōl thal′ē in; fē΄nōl fthal′ēn, fē΄nōlfthal′ē in] n. [ PHENOL + PHTHALEIN] a white to pale yellow, crystalline powder, C20H14O4, used as a laxative, in making dyes, and as an acid base indicator in chemical analysis: it is… …   English World dictionary

  • Phenolphthalein — Strukturformel Allgemeines Name Phenolphthalein Andere Namen …   Deutsch Wikipedia

  • phenolphthalein — /fee nawl thal een, ee in, fthal , nol /, n. Chem., Pharm. a white, crystalline compound, C20H14O4, used as an indicator in acid base titration and as a laxative. [1870 75; PHENOL + PHTHALEIN] * * * ▪ chemical compound       an organic compound… …   Universalium

  • 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 …   Medical dictionary

  • Phenolphthalein — Phe|nol|phtha|le|in auch: Phe|nolph|tha|le|in 〈n. 11; unz.; Chem.〉 zur Gruppe der Phthaleine zählender Triphenylmethanfarbstoff, wird als Indikator in der analytischen Chemie verwendet * * * Phe|nol|phtha|le|in [↑ Phthalein] Syn.: 3,3 Bis(4… …   Universal-Lexikon

  • phenolphthalein — fenolftaleinas statusas T sritis chemija apibrėžtis Indikatorius. formulė C₆H₄:[C(HOC₆H₄)₂OC(=O)] atitikmenys: angl. phenolphthalein rus. фенолфталеин ryšiai: sinonimas – 3,3 bis(4 hidroksifenil) 3H 1 izobenzfuranonas …   Chemijos terminų aiškinamasis žodynas

  • phenolphthalein — Indicator dye that is colourless at neutral pH and red pink in slightly alkaline solutions. Also used as a laxative …   Dictionary of molecular biology

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