<unk> s <unk> s) and hydrochlorofluorocarbons (HCFCs) are fully or partly halogenated hydrocarbons that contain carbon (C), hydrogen (H), chlorine (Cl), and fluorine (F), produced as volatile derivatives 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<unk> s have been widely used as refrigerants, propellants (in aerosol applications), and solvents. Because<unk> s 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) including R-410A and R-134a.
Chlorofluorocarbon
Trihalomethane
Triphenylchloroethylene
Perfluoroisobutene
Chloroethane
Arsenic pentafluoride
Phenylsilatrane
Triphenylbromoethylene