ketene

ketene
\\ˈkēˌtēn\ noun (-s)
Etymology: International Scientific Vocabulary ket- + -ene; originally formed as German keten
: a colorless poisonous gaseous compound CH2 . C . O of penetrating odor that is made by pyrolysis of acetic acid or acetone and used as an acetylating agent (as in making acetic anhydride from acetic acid or acetic esters from alcohols); also : any of various derivatives of this compound — see diketene

Useful english dictionary. 2012.

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  • Ketene — Allgemeine Struktur Struktur der Stammverbindung Keten Ketene (Betonung auf der zweiten Silbe: Ketene) sind eine Gruppe organischer Verbindungen mit der allgemeinen Formel RR C=C=O …   Deutsch Wikipedia

  • ketene — [kē′tēn΄] n. [ KET(O) + ENE] 1. a colorless, toxic gas, H2C∶CO, with a penetrating odor, made by passing acetone or acetic acid through hot metal tubes: used esp. as an acetylating agent 2. any of a series of related organic compounds containing… …   English World dictionary

  • ketene — /kee teen/, n. Chem. a colorless, poisonous gas, C2H2O, irritating to the lungs, prepared from acetone or acetic acid by pyrolysis: used chiefly in the manufacture of certain commercial chemicals, as acetic anhydride and aspirin. [1905 10; KET +… …   Universalium

  • Ketene — A ketene is an organic compound of the form R2C=C=O. Hermann Staudinger pioneered the research of ketenes. [cite journal title = Ketene, eine neue Körperklasse author = Hermann Staudinger journal = Berichte der deutschen chemischen Gesellschaft… …   Wikipedia

  • ketene — ketenas statusas T sritis chemija formulė H₂C=C=O atitikmenys: angl. keten; ketene rus. кетен …   Chemijos terminų aiškinamasis žodynas

  • ketene — ketenas statusas T sritis chemija formulė R₂C=C=O atitikmenys: angl. keten; ketene rus. кетен …   Chemijos terminų aiškinamasis žodynas

  • ketene — noun Etymology: International Scientific Vocabulary Date: 1907 a colorless poisonous gas C2H2O of penetrating odor used especially as an acetylating agent; also any of various derivatives of this compound …   New Collegiate Dictionary

  • ketene — noun any of a class of unsaturated ketones, having a general formula RR …   Wiktionary

  • ketene — 1. CH2=C=O; a very reactive acetylating agent, used in chemical syntheses. 2. Any substituted k.. * * * ke·tene kē .tēn n a colorless poisonous gas C2H2O of penetrating odor used esp. as an acetylating agent also any of various derivatives of… …   Medical dictionary

  • ketene — n. colorless poisonous gas used mainly in the manufacture of cellulose acetate and aspirin (Chemistry) …   English contemporary dictionary

  • ketene — ke·tene …   English syllables

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