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1. A complex nitrogenous base, C20H21N3O, obtained by oxidizing a mixture of aniline and toluidine, as a colourless crystalline substance which forms red salts. These salts are essential components of many of the so called aniline dyes, as fuchsine, aniline red, etc. By extension, any one of the series of substances derived from, or related to, rosaniline proper

Derived forms: rosanilines

Encyclopedia: Rosaniline