2.2- Diarylamines

Diarylamines are compounds that have two aromatic groups and one hydrogen atom attached to nitrogen. Diphenyl amine (DPA), or [Pg.242]

Selected physical properties for representative diarylamiaes are givea ia Table 1. The solubiUty of DPA ia water (1) is givea by [Pg.242]

Diphenylamine is a weak base, = 9 x lO . Dilute acids are used to separate DPA from primary aromatic amines, such as aniline, [Pg.242]

G-All lation. Siace para-alkylated derivatives of DPA are widely used ia large volumes as antioxidants (qv), the most important reaction of DPA is the acid catalyzed reaction with olefins (2,3). Alkylation is carried out by adding the olefin to a mixture of DPA and an acid catalyst, such as AIQ. [Pg.242]

Kirk-Othmer Encyclopedia of Chemical Technology (4th Edition) [Pg.242]

Kf = 4 X 10 °. Diphenjiamine hydrochloride [537-67-7] stable in the presence of 7.5% or stronger hydrochloric acid, but dissociates in more dilute solutions. [Pg.242]

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