1-624-284 - The Print Collector/Heritage Images

August Wilhelm von Hofmann, 19th century German organic chemist, (1900). Through his work on coal-tar derivatives, Hofmann (1818-1892) in 1858 obtained aniline dye magenta or fuschine and in 1863 patented dyes known as Hofmann violets. He was appointed director of the Royal College of Chemistry, London, in 1845.