/buy fen"l, -feen"l/, n. Chem.
a water-insoluble, pleasant-smelling, colorless powder or white scales, C12H10, composed of two phenyl groups, from which benzidine dyes are derived: used chiefly as a heat-transfer agent and in organic synthesis. Also called diphenyl, phenylbenzene.
[1920-25; BI-1 + PHENYL]

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also called  Diphenyl,  

      an aromatic hydrocarbon, used alone or with diphenyl ether as a heat-transfer fluid; chemical formula, C6H5C6H5. It may be isolated from coal tar; in the United States, it is manufactured on a large scale by the thermal dehydrogenation of benzene.

      Biphenyl is slightly less reactive chemically than benzene. It is chlorinated industrially to a mixture, polychlorinated biphenyl (q.v.), known as PCB, which is now much restricted because of its toxicity but formerly was used in paper coatings and as a lubricant and a heat-transfer fluid. Pure biphenyl is a colourless crystalline solid with a pleasant odour; it is insoluble in water but soluble in ordinary organic solvents.

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Universalium. 2010.

Look at other dictionaries:

  • Biphenyl — IUPAC name …   Wikipedia

  • biphenyl — [bī fen′əl, bīfē′nəl] n. DIPHENYL …   English World dictionary

  • Biphenyl — Strukturformel Allgemeines Name Biphenyl Andere Namen Dip …   Deutsch Wikipedia

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  • biphenyl — noun Etymology: International Scientific Vocabulary Date: circa 1923 a white crystalline hydrocarbon C6H5•C6H5 used especially as a heat transfer medium and in organic synthesis; also a derivative of biphenyl …   New Collegiate Dictionary

  • Biphenyl-2-ol — Strukturformel Allgemeines Name 2 Phenylphenol Andere Namen E 231 …   Deutsch Wikipedia

  • biphenyl — noun a) A colourless solid hydrocarbon, CH, consisting of two benzene rings linked together halogenated biphenyls b) Any substituted or otherwise altered version of biphenyl, such as PCBs …   Wiktionary

  • biphenyl — bifenilas statusas T sritis chemija formulė (C₆H₅)₂ atitikmenys: angl. biphenyl rus. бифенил …   Chemijos terminų aiškinamasis žodynas

  • biphenyl — SYN: diphenyl. polychlorinated b. (PCB) b. in which some or all of the hydrogen atoms attached to ring carbons are replaced by chlorine atoms; a probable human carcingogen and teratogen. * * * bi·phe·nyl ( )bī fen əl, fēn n a white crystalline… …   Medical dictionary

  • Biphenyl — Bi|phe|nyl 〈n.; Gen.: s, Pl.: e; Chemie〉 kristallisierender Kohlenwasserstoff, der u. a. zur Konservierung von Zitrusfrüchten verwendet wird [Etym.: <Bi… + Phenyl] …   Lexikalische Deutsches Wörterbuch