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 311
+ 2H (Flavanthrene). The violet blue vat of Flavanthrene contains the disodium salt of the dihydroderivative formed by the action of sodium hydrosulphite as follows :— CO C(OXTa)
Dyes and dyeing
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