Biphenyl

Japanese: ビフェニル
Biphenyl

1,1'-biphenyl. C 12 H 10 (154.20). C 6 H 5 -C 6 H 5 . Also called diphenyl. Found in small amounts in coal tar, it can be produced by passing benzene vapor through a red-hot iron tube. It can also be obtained by condensing two molecules of iodobenzene with copper powder in the Ullmann reaction. Crystal. Melting point 71 °C, boiling point 255 °C. 1.588. λ max 206, 247 nm (log ε 4.52, 4.26). Soluble in ethanol, ether, etc. Thermally stable, used as a heat transfer medium and as a disinfectant for citrus fruits. LD 50 3280 mg/kg (rat, oral). [CAS 92-52-4]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

Japanese:

1,1′-biphenyl.C12H10(154.20).C6H5-C6H5.ジフェニルともいう.コールタール中に少量含まれるが,ベンゼンの蒸気を赤熱した鉄管中に通じれば生成する.また,ヨードベンゼン 2分子を銅粉を用いて,ウルマン反応により縮合させると得られる.結晶.融点71 ℃,沸点255 ℃.1.588.λmax 206,247 nm(log ε 4.52,4.26).エタノール,エーテルなどに可溶.熱的に安定で熱媒体として,また,かんきつ類の殺菌剤に用いられる.LD50 3280 mg/kg(ラット,経口).[CAS 92-52-4]

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