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Ernst Julius Cohen (Amsterdam, March 7, 1869 – March 5, 1944) was a Dutch chemist known for his work on the allotropy of metals. Cohen studied chemistry under Svante Arrhenius in Stockholm, Henri Moissan at Paris, and Jacobus van't Hoff at Amsterdam. In 1893 he became Van't Hoff's assistant and in 1902 he became professor of Physical Chemistry at the University of Utrecht, a position which he held until his retirement in 1939. Throughout his life, Cohen studied the allotropy of tin. Cohen’s areas of research included polymorphism of both elements and compounds, photographic chemistry, electrochemistry, pizeochemistry, and the history of science. He published more than 400 papers and numerous books. He was elected a Foreign Member of the Royal Society in 1926. He died March 5, 1944 in a gas chamber at Auschwitz. * "J. H. van 't Hoff, his life and work", 1912 External links * [1] Weintraub, B. (2003). Tin Disease and Ernst Julius Cohen (1869-1944); Chemistry in Israel, Bull. Isr. Chem. Soc., Issue 9, Apr. 2002, p 31-32.
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