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Application of the benzidine colours in all branches of printing (1898)
Farbenfabriken Bayer Aktiengesellschaft · Elberfeld · leaf 38
ii tannic acid dissolved in [Vja noggs. i> 75 >> acetic acid 9° Tw. (30 %) 2 oz. >> 201000 grms. powdered citric acid No. 13. Dyed with: 4 % Brilliant Azurine 5 G afterwardstreated with1 % sulphate of copper for 72 hourat the boil. Discharged with: Persian berry Yellow dischargethe…Textile fabrics · Dyes and dyeing
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