dichlorodifluoromethane

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dichlorodifluoromethane

(daɪˌklɔːrəʊdaɪˌflʊərəʊˈmiːθeɪn)
n
(Elements & Compounds) a colourless nonflammable gas easily liquefied by pressure: used as a propellant in aerosols and fire extinguishers and as a refrigerant. Formula: CCl2F2. See also Freon
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Recently, many of the conventional blowing agenrs such as monofluorotrichloromethane (R11) and difluorodichloromethane (R12) have been suspected to contribute to the depletion of the stratospheric ozone layer (11), (12).
In 1930 he prepared difluorodichloromethane, with a molecule consisting of a carbon atom to which two chlorine atoms and two fluorine atoms were attached.
Experiments were conducted on a counter-rotating twin-screw extruder with difluorochloromethane and difluorodichloromethane used as blowing agents.