Synthetic colorants, c 1900.
© Science Museum / Science & Society Picture Library
Four jars containing synthetic colorants. Sudan III (red dye) manufactured by Actien Gesellschaft fur Anilin Fabrikation, Berlin, Germany (Agfa); Brilliant Acid Carmine B by K. oehler, Offenbach-bei-Main, Germany; Acid Chrome Red B by The Bayer Company Ltd, Manchester; Croceinescarlet by Chemische Fabriken vormals Weiler ter Meer, Uerdingen-am-Rhein, Germany. The Sudan (or Soudan) dyes were azo dyes introduced by Agfa in 1883-4. The Croceine Scarlet dyes were azo dyes introduced by Bayer in 1881. The Aktien Gesellschaft fUr Anilin Fabrikation was founded in 1873 by Carl Martius and Paul Mendelssohn-Bartholdy (the nephew of the composer), became part of I.G. Farbenindustrie AG in 1925 and a subsidiary of Farbenfabriken Bayer AG in 1952. The Bayer Company founded in 1896 was the British subsidiary of Farbenfabriken vormals Friedrich Bayer of Elberfeld, Germany. oehler, which had started with picric acid in 1856, was taken over by the Griesheim-Elektron company in 1905 and hence became