"A chlorofluorocarbon (CFC) is an organic compound that contains only C , Cl , and F , produced as a volatile derivative of methane, ethane, and propane. They are also commonly known by the DuPont brand name Freon. The most common representative is dichlorodifluoromethane (R-12 or Freon-12). Many CFCs have been widely used as refrigerants, propellants (in aerosol applications), and solvents. Because CFCs contribute to ozone depletion in the upper atmosphere, the manufacture of such compounds has been phased out under the Montreal Protocol, and they are being replaced with other products such as hydrofluorocarbons (HFCs) (e.g., R-410A), hydrocarbons, and CO2"@en . . . . "A chlorofluorocarbon (CFC) is an organic compound that contains only C , Cl , and F , produced as a volatile derivative of methane, ethane, and propane. They are also commonly known by the DuPont brand name Freon. The most common representative is dichlorodifluoromethane (R-12 or Freon-12). Many CFCs have been widely used as refrigerants, propellants (in aerosol applications), and solvents. Because CFCs contribute to ozone depletion in the upper atmosphere, the manufacture of such compounds has been phased out under the Montreal Protocol, and they are being replaced with other products such as hydrofluorocarbons (HFCs) (e.g., R-410A), hydrocarbons, and CO2 . However, these replacements are sometimes considered pollutants in their own right."@en . . . . . . "Chlorofluorocarbon"@en . "June 2013"@en . . . . . . . . . "which property of CO2 is saturated and what concentration is regarded as \"high\"?"@en . .