A text-book of dye chemistry; the chemistry of dye-stuffs (1920)
Georgievics, Georg Cornelius Theodor von, 1859-, Grandmougin, Eugène, Mason, Frederick Alfred, 1888- · London Scott, Greenwood · leaf 479
DYE CHEMISTRY 458 The following alternative method of formulating Violanthrone indicates more clearly perhaps the relationship to Benzanthrone : /\ \/^co\y \/"C0^\/ That the course of the reaction is probably as shown is made even more certain by a further synthesis from dibenzoyl-a-dinaphthyl. On… … The compound thus obtained is a vat colour which, in common with Tsoviolanthrone, to be discussed shortly, and Pyranthrone, which has already been dealt with, is free from nitrogen. It occurs in commerce as Indanthrene Dark Blue BO, or BGO (B.A.S.F.), Caledon Bark Blue B (Sol.). The vat is reddish…
Dyes and dyeing
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
