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] | | [Supplementary information] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
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] | | [補完資料] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
<<: Karpaty (mountain range) (English spelling)
>>: Kalpa-sūtra (English spelling)
Cultivating crops on the same land more than twice...
…(4) Degrees according to the capabilities of hum...
...Furthermore, from the end of the 19th century ...
〘 noun 〙 A sense that perceives things intuitively...
...A mutual aid system in which small and medium-...
…This plant is an indicator of the cold period of...
A bay on the Atlantic coast in the southern part o...
…The word immigrant is often used instead of the ...
When the Kingdom of Judah, an ancient Israelite n...
The Self-Defense Forces are primarily responsible ...
A river in the central and northern part of Hirosh...
…The two ends of a piece of cloth measuring 2–4 m...
...Johann Salomo Semler (1725-91) studied the his...
… [Takeo Arisue] [Annaka Castle Town] A castle to...
...A similar custom is the buttocks-smacking fest...