Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 453
Melt withSodium Oxide Napthalene Oxidation with Mercury andSulphuric Acid A. … Fig. 224.—Syntheses of Indigo. (Ramsey & Weston, Artifidal Dyestuffs.) It is a mixture of indoxyl and indoxylic acid; when steamed it is con-verted into Indigo. reduced like Indigo and dyed from a vat. At the present time it has but little use,though formerly it was used somewhat as an addition…
Dyes and dyeing · Textile fabrics
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