Mitscherlich, Eilhardt

Mitscherlich, Eilhardt

▪ German chemist
born Jan. 17, 1794, Neuende, duchy of Oldenburg [Germany]
died Aug. 28, 1863, Berlin, Prussia

      German chemist who promulgated the theory of isomorphism, a relationship between crystalline structure and chemical composition.

      From 1818 to 1820 Mitscherlich worked in the Berlin laboratory of the German botanist Heinrich F. Link, where he first undertook the study of arsenates and phosphates. In 1819 he discovered from this study that compounds with similar composition often have the same crystalline structure. In 1821 he became professor of chemistry at the University of Berlin. He continued his studies of isomorphism and also made other important discoveries, including selenic acid (1827) and the monoclinic crystal form of sulfur (1823). He also named benzene, became the first to synthesize nitrobenzene in 1832, and was one of the first to recognize contact action, now known as catalytic action.

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  • Pasteur, Louis — born Dec. 27, 1822, Dole, France died Sept. 28, 1895, Saint Cloud, near Paris French chemist and microbiologist. Early in his career, after studies at the École Normale Supérieure, he researched the effects of polarized light on chemical… …   Universalium

  • Μίτσερλιχ, Άιλχαρτ — (Eilhardt Mitscherlich, Νόιεντε, Όλντενμπουργκ 1794 – Σένμπεργκ, Βερολίνο 1863). Γερμανός χημικός. Σπούδασε πρώτα ιατρική και μετά αφοσιώθηκε εντελώς στη χημεία. Υπήρξε μαθητής και στη συνέχεια συνεργάτης του Μπερτσέλιους. Το 1821 τον προσκάλεσε… …   Dictionary of Greek

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  • polymorphism — polymorphistic, adj. /pol ee mawr fiz euhm/, n. 1. the state or condition of being polymorphous. 2. Crystall. crystallization into two or more chemically identical but crystallographically distinct forms. 3. Biol. the existence of an organism in… …   Universalium

  • benzene — [19] The original name given to this hydrocarbon, by the German chemist Eilhardt Mitscherlich in 1833, was benzine. He based it on the term benzoic acid, a derivative of benzoin, the name of a resinous substance exuded by trees of the genus… …   The Hutchinson dictionary of word origins

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