dicyanogenn.
/ˌdʌɪsʌɪˈanədʒ(ə)n/, U.S. /ˌdaɪsaɪˈænədʒən/, /ˌdaɪsaɪˈænəˌdʒɛn/ Chemistry.
The gaseous compound cyanogen, C2N2.
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1874 Amer. Cycl. V. 603/1 Cyanogen,..a compound gas consisting of two atoms of carbon and one of nitrogen, and properly designated dicyanogen.
1922 T. M. Lowry Inorg. Chem. xxviii. 477 Cyanogen-gas or dicyanogen, C2N2, may be prepared in the free state by heating to a red heat the cyanide of mercury, silver, or gold.
1958 Analyt. Chem. 30 1149/1 Dicyanogen, hydrogen cyanide, ammonia, and even nitrogen itself released by pyrolytic cleavage of organic compounds are oxidised to nitrous acid on contact with heated manganese dioxide.
2006 J. Lilensten & J. Bornarel Space Weather 201 Comet nuclei..are made of ice, primarily water ice, with traces of ammoniac, methane, dicyanogen and carbon monoxide.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).
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di-cyanogen
A compound radical consisting of one atom of nitrogen and one of carbon (symbol CN or Cy). In the form of di-cyanogen (C2N2), it is a colourless gas, highly poisonous, with a strong odour like that of prussic acid. It exists in a great number of compounds, the cyanides, cyanates, cyanurets, etc.
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the world > physical sensation > use of drugs and poison > poison > [noun] > poisonous gas
carbonic oxide1802
poison gas1816
cyanogen1823
carbon monoxide1868
sneeze gas1918
sneezing gas1918
Lewisite1921
sternutator1922
blister gas1936
nausea gas1936
Zyklon1939
harassing agent1968
1823 W. Henry Elements Exper. Chem. (ed. 9) I. viii. 439 Cyanogen was discovered by Gay Lussac in 1815.
1855 A. Bain Senses & Intellect i. ii. 165 An evolution of the unwholesome and suffocating gas, cyanogen.
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n.1874as lemmas