Commonly Used CFCÕs
Name
FormulaPrimary Use Residence Time
FormulaPrimary Use Residence Time (50% decrease)CFC-11CCl3FPropellant~55 years
CCl3FPropellant~55 yearsCFC-12CCl2F2 Refrigerant~100 years
CCl2F2 Refrigerant~100 yearsCFC-113C2Cl3F3Cleaning Solvent~65
years
C2Cl3F3Cleaning Solvent~65
yearsIt
would take 10-20 years for CFC levels to start falling if all production ended
today due to leakage of CFCÕs from old appliances,
etc.