The chemistry of dyestuffs; a manual for students of chemistry and dyeing (1917)
Fort, M, Lloyd, L. L. (Lorenzo L.) · Cambridge [Eng.] University press · leaf 183
ed on both wool and cotton, fastness im- proved in either case by after-treatment with bichrome or chromium fluoride. Sulphonazurine D (By.), obtained from benzidine- sulphone-disulphonic acid and two molecules of phenyl- a-naphthylamine, is used on both cotton and wool giving blue shades of good… … S03Na The Benzopurpurines are all red dyestuffs.
Dyes and dyeing -- Chemistry
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