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[rough translation from German Wikipedia entry]
Otto Nikolaus Witt ( Russian Отто Николаус Витт , scientific transliteration Otto Nikolaus Vitt) was born 31 March 1853 in St. Petersburg and died 23 March 1915 in Berlin. Witt was a Russian, Swiss and German chemist. Otto Nikolaus Witt was the son of a Russian diplomat. In 1865 the family lived in Munich and a year later in Zurich, where they took Swiss citizenship. Witt studied chemistry from 1871 to 1873 at the Polytechnic University of Zurich. He worked in 1873 in Duisburg and in returned to Zurich 1874 to work in calico-printing and continue his studies. He was interested in the dyes of Croisaant and Bretonnière , which he described as sulfur dyes, recognizing and revealing the previously secret manufacturing process. He later worked at a factory in Brentford. At the age of 23,Witt established his dye process, experimenting with chemical combinations to synthesize yellow and purple tones.
In 1879 Witt worked at Cassella & Co. in Frankfurt am Main, later teaching chemistry in Mulhouse and from 1882-1885 was director of the association of chemical factories in Waldhof near Mannheim. In 1885 he became a German citizen. In 1885 Witt completed a dissertation at the Technische Universität Berlin on bleaching, dyeing and calico printing. From 1897 to 1898 he was rector at the university. He also founded a popular scientific journal Prometheus .
For more information, see Wikipedia entry at: http://de.wikipedia.org/wiki/Otto_Nikolaus_Witt .
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