- a red dye, C20H20N3Cl, derived from aniline and orthotoluidine, a constituent of fuchsin.
- the base, C20H21N3O, which, with hydrochloric acid, forms this dye.
Origin of rosaniline
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for rosaniline
In France the hydrochlorate of rosaniline is chiefly employed.
A pleasant syrup, leaving a slightly sharp taste, containing a little carbonate of potash, and faintly coloured with rosaniline.
Other transformations of rosaniline have yet to be chronicled.Coal
A few years ago murexid was extensively used in dyeing; it is now almost superseded by rosaniline or magenta.
The intimate relation between chrysaniline, rosaniline, and leucaniline has been shown by Hofmann.
- a reddish-brown crystalline insoluble derivative of aniline used, in the form of its soluble hydrochloride, as a red dyeSee also fuchsin
C19: from rose 1 + aniline
- A brownish-red crystalline organic compound derived from aniline and used in the manufacture of dyes and in Schiff's reagent.