Orange II

Japanese: オレンジ II - おれんじ
Orange II

...also called dye intermediates. For example, in the case of the acid dye Orange II, benzene and naphthalene are used as starting materials, and are processed through unit operations such as nitration, amination, sulfonation, hydroxylation, and diazotization to produce diazobenzenesulfonic acid and β-naphthol, which are then finally coupled to produce the dye (Figure). In this way, nitrobenzene, aniline, sulfanilic acid, β-naphthalenesulfonic acid, and β-naphthol, which are produced as intermediates through unit operations, are dye intermediates.

*Some of the terminology that mentions "Orange II" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…染料中間物ともいう。一例として酸性染料のオレンジIIを例にとると,ベンゼンおよびナフタレンを出発原料として,それぞれニトロ化,アミノ化,スルホン化,ヒドロキシル化,ジアゾ化などの単位操作を経てジアゾベンゼンスルホン酸およびβ‐ナフトールがつくられ,最終的に2者をカップリングして染料が生成する(図)。このように単位操作により中間につくられるニトロベンゼン,アニリン,スルファニル酸,β‐ナフタレンスルホン酸,β‐ナフトールなどは染料中間体である。…

※「オレンジ II」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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