bitumenen.
/ˈbɪtjʊmiːn/ Chemistry.
Name given by Berthelet to the least volatile of the hydrocarbons obtained by passing benzene vapour through a red-hot porcelain tube. Watts Dict. Chem.
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1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 572 Bitumene, a blackish liquid..remains in the retort at a dull red heat, and solidifies on cooling.
This entry has not yet been fully updated (first published 1887; most recently modified version published online June 2018).
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n.1868