Azobenzene

enUK

azobenzene

[‚a·zō′ben‚zēn] (organic chemistry) C₆H₅N₂C₆H₅ A compound existing in cis and trans geometric isomers; the cis form melts at 71°C; the trans form comprises orange-red leaflets, melting at 68.5°C; used in manufacture of dyes and accelerators for rubbers.

Azobenzene

C₆H₅N = NC₆H₅ a very simple aromatic azocompound; orange-red crystals. A stable trans-isomer with a melting point of 68°C, insoluble in water, soluble in ether, ice-cold acetic acid, and concentrated sulfuric acid.

Azobenzene is not held by fibers and cannot be used alone as a dye. If amino- or oxy- groups are introduced into azobenzene molecules, simple azo dyes are formed. Azobenzene is obtained by the reduction of nitrobenzene in an alkaline solution of zinc dust or by the electrochemical method. Azobenzene is reduced to aniline through hy-drazobenzene as was established by N. N. Zinin in 1845. Azobenzene was discovered in 1834 by the German chemist E. Mitscherlich.

单词	azobenzene
释义	azobenzene enUK azobenzene (ˌeɪzəʊˈbɛnziːn; -bɛnˈziːn) n1. (Elements & Compounds) a yellow or orange crystalline solid used mainly in the manufacture of dyes. Formula: C6H5N:NC6H52. (Elements & Compounds) any organic compound that is a substituted derivative of azobenzene Translations Azobenzene enUK azobenzene [‚a·zō′ben‚zēn] (organic chemistry) C₆H₅N₂C₆H₅ A compound existing in cis and trans geometric isomers; the cis form melts at 71°C; the trans form comprises orange-red leaflets, melting at 68.5°C; used in manufacture of dyes and accelerators for rubbers. Azobenzene C₆H₅N = NC₆H₅ a very simple aromatic azocompound; orange-red crystals. A stable trans-isomer with a melting point of 68°C, insoluble in water, soluble in ether, ice-cold acetic acid, and concentrated sulfuric acid. Azobenzene is not held by fibers and cannot be used alone as a dye. If amino- or oxy- groups are introduced into azobenzene molecules, simple azo dyes are formed. Azobenzene is obtained by the reduction of nitrobenzene in an alkaline solution of zinc dust or by the electrochemical method. Azobenzene is reduced to aniline through hy-drazobenzene as was established by N. N. Zinin in 1845. Azobenzene was discovered in 1834 by the German chemist E. Mitscherlich.
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