phosgene

phosgene
[ˈfɒzdʒiːn]
noun
  1. [mass noun](Chemistry)a colourless poisonous gas made by the reaction of chlorine and carbon dioxide. It was used as a poison gas, notably in the First World War
    光气
  2. Alternative name: carbonyl chloride; chem. formula: COCl2
    又名:碳酰氯;化学分子式:COCl2
语源
  1. early 19th cent.: from Greek phōs 'light' + -gen, with reference to its original production by the action of sunlight on chlorine and carbon monoxide
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