Carbazole - Carbazole (English spelling)

Japanese: カルバゾール - かるばぞーる(英語表記)carbazole
Carbazole - Carbazole (English spelling)

A nitrogen-containing heterocyclic compound. Also called dibenzopyrrole. It is contained in coal tar obtained by carbonization of coal, and is separated and refined from anthracene oil obtained as a high-boiling fraction in the fractional distillation of coal tar. It is also contained in crude oil. It is a colorless sublimable crystal that is insoluble in water and poorly soluble in ethanol (ethyl alcohol) and ether. When nitrate ions or nitrite ions are added to a solution of this compound in concentrated sulfuric acid, it turns dark green, so it is used to detect these ions. In industry, it is used as a synthetic raw material for dyes and plastics.

[Masahiro Hirota]

[References] | Anthracene oil | Coal tar [Supplementary information] | Carbazole (Data Note)

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

窒素を含む複素環式化合物の一つ。ジベンゾピロールdibenzopyrroleともいう。石炭の乾留により得られるコールタール中に含まれ、コールタールの分留で高沸点の留分として得られるアントラセン油から分離・精製する。原油にも含まれている。昇華性をもつ無色の結晶で、水には溶けず、エタノール(エチルアルコール)やエーテルにも溶けにくい。この化合物を濃硫酸に溶かした溶液に硝酸イオンや亜硝酸イオンを加えると暗緑色を呈するので、これらのイオンの検出に用いる。工業的には染料とプラスチックの合成原料としての用途がある。

[廣田 穰]

[参照項目] | アントラセン油 | コールタール[補完資料] | カルバゾール(データノート)

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