a red dye, C20H20N3Cl, derived from aniline and orthotoluidine, a constituent of fuchsin.
the base, C20H21N3O, which, with hydrochloric acid, forms this dye.
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How to use rosaniline in a sentence
It has been explained that by the methylation of rosaniline Hofmann obtained violet colouring-matters.
Magenta is the salt of a base now known as rosaniline, and it belongs therefore to the class of basic colouring-matters.
From benzene and toluene alone about forty distinct colouring-matters of the rosaniline group are sent into commerce.
Later researches have shown that by heating rosolic acid with ammonia it is converted into rosaniline.
In France the hydrochlorate of rosaniline is chiefly employed.Cooley's Practical Receipts, Volume II | Arnold Cooley
British Dictionary definitions for rosaniline
a reddish-brown crystalline insoluble derivative of aniline used, in the form of its soluble hydrochloride, as a red dye: See also fuchsin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012