The synthetic dyestuffs and the intermediate products from which they are derived (1920)
Cain, John Cannell, 1871-1921, Thorpe, Jocelyn Field, 1872- · London : C. Griffin · leaf 160
ene is the hydrocarbon which is formed from it by reduction withphosphorus and hydriodic acid, and which has the constitution In this description the name pyranthrene is given to the colouring matter. When reduced by alkaline hydrosulphite, pyrauthrene yields a purple-red vatin which unmordanted… … CO ( Pyranthrene —Pyranthrone).
Dyes and dyeing
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