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P Aminobenzenesulphonic acid—

SULPHONATION OF AROMATIC AMINES If aniline is treated with excess of concentrated sulphuric acid and the resulting mixture, which contains aniline sulphate, is heated at 180° until a test portion when mixed with sodium hydroxide solution no longer liberates aniline, p-aminobenzenesulphonic acid or sulphanilic acid is formed this separates as the dihydrate upon pouring the cooled mixture into water. The reaction prohahly proceeds as follows ... [Pg.585]

See other pages where P Aminobenzenesulphonic acid— is mentioned: [Pg.179]    [Pg.85]    [Pg.908]    [Pg.908]    [Pg.723]    [Pg.179]    [Pg.85]    [Pg.908]    [Pg.908]    [Pg.723]    [Pg.85]    [Pg.276]   


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2- Aminobenzenesulphonic acid

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