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ros·an·i·linealso ros·an·i·lin (rō-zăn′ə-lĭn)
1. A colorless crystalline organic base, C20H21N3O, or one of this base's yellow-brown or green crystalline hydrochloride salts which form a red solution in water, derived from aniline and used in the manufacture of fuchsin and other dyes, and in Schiff's reagent.
2. Any of various compounds, especially dyes, related to or derived from rosaniline.
rosaniline(rəʊˈzænɪˌliːn; -lɪn) or
(Dyeing) a reddish-brown crystalline insoluble derivative of aniline used, in the form of its soluble hydrochloride, as a red dye. See also fuchsin
[C19: from rose1 + aniline]
ros•an•i•line(roʊˈzæn l ɪn, -ˌaɪn)
1. a red dye, C20H20N3Cl, derived from aniline and the ortho isomer of toluidine.
2. the base, C20H21N3O, which, with hydrochloric acid, forms this dye.