Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 704
again on exposure to the air. Auramine gives a colorlessfiltrate, and the color does not reappear on exposure to the air; but theprecipitate left on the filter gradually becomes yellowish on standing. Thesolutions of nearly all dyes are decolorized by this reagent, and many dyesgive a… … Fig. 299.—Sizing Machine for Skein Yarn. original dyestuff being again formed on oxidation in the air), or be entirelydestroyed. In the latter case no reappearance of color will be shown onoxidation. 16. Reaction with Zinc Dust and Acetic Acid.—Repeat the above testas given, using, however, 5 cc.…
Dyes and dyeing · Textile fabrics
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