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1 definition found
 for phosgene gas
From The Collaborative International Dictionary of English v.0.48 :

  Carbonyl \Car"bon*yl\, n. [Carbon + -yl.] (Chem.)
     The radical ({=CO), occuring, always combined, in many
     compounds, as the aldehydes, the ketones, urea, carbonyl
     chloride, etc.
     [1913 Webster]
  
     Note: Though denoted by a formula identical with that of
           carbon monoxide, it is chemically distinct, as carbon
           seems to be divalent in carbon monoxide, but
           tetravalent in carbonyl compounds.
           [1913 Webster]
  
     Carbonyl chloride (Chem.), a colorless gas, COCl2, of
        offensive odor, and easily condensable to liquid. It is
        formed from chlorine and carbon monoxide, under the
        influence of light, and hence has been called phosgene,
        or phosgene gas; -- called also carbon oxychloride. It
        is used in chemical synthesis, and was also used as a
        poison gas in World War I.
        [1913 Webster +PJC]

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