Nikodem Caro (Polish pronunciation: [ɲiˈkɔ.dɛm tsarɔ]; 23 May 1871, Łódź, then Russian Empire – 27 June 1935, Rome, Italy) was an industrial chemist and entrepreneur.
From 1895 on he worked in the Deutsche Dynamit AG with Adolph Frank on the development of calcium cyanamide as a means of fixing nitrogen, hence the Frank-Caro process.
Caro became an important figure in the nitrogen fixation industry and a rival of Fritz Haber.
[3] Caro also contributed to the production of combat gases used by German troops during World War I.
[2] Caro is the author of many works about various elements, synthesis a chemical compounds actions e.g. Gewinnung von Chlor und Salzsäure (1893), Landwirtschaftliche Untersuchungen (1895), Handbuch für Acetylen (1904),[4] Die Torflager als Kraftquellen (1907).