Cacodyl definition

kăkə-dĭl
The univalent arsenic group (CH3 )2 As.
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A poisonous oil, As2 (CH3 )4 , with an obnoxious garlicky odor.
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The radical As(CH3)2, composed of arsenic and methyl: its compounds are poisonous and foul-smelling.
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A poisonous, colorless liquid, As2(CH3)4, with an offensive odor: it is a polymer of this radical.
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(chemistry) The dimethylarsine radical (CH3)2As-
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(chemistry) Tetramethyldiarsine formally derived from two of these radicals; an evil-smelling liquid that spontaneously combusts in air.
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Origin of cacodyl

  • Greek kakōdēs bad-smelling (kakos bad kakka- in Indo-European roots) (-ōdēs -smelling) (from ozein ōd- to smell) –yl

    From American Heritage Dictionary of the English Language, 5th Edition

  • Ancient Greek κακώδης (kakōdēs, “evil smelling”)

    From Wiktionary

Cacodyl Sentence Examples

  • It is detected by heating with ordinary alcohol and sulphuric acid, which gives rise to acetic ester or ethyl acetate, recognized by its" fragrant odour; or by heating with arsenious oxide, which forms the pungent and poisonous cacodyl oxide.

  • Analytical problems, such as the isolation of certain organic radicals, attracted his attention to begin with, but he soon turned to synthetical studies, and he was only about twenty-five years of age when an investigation, doubtless suggested by the work of his master, Bunsen, on cacodyl, yielded the interesting discovery of the organo-metallic compounds.

  • Arsenic compounds can be detected in the dry way by heating in a tube with a mixture of sodium carbonate and charcoal when a deposit of black amorphous arsenic is produced on the cool part of the tube, or by conversion of the compound into the trioxide and heating with dry sodium acetate when the offensive odour of the extremely poisonous cacodyl oxide is produced.

  • The dimethyl arsine (or cacodyl) compounds have been most studied.

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