PowerPoint Presentation

Commonly Used CFC’s

Name Formula Primary Use Residence Time

• (50% decrease)

CFC-11 CCl3F Propellant ~55 years

CFC-12 CCl2F2 Refrigerant ~100 years

CFC-113 C2Cl3F3 Cleaning Solvent ~65 years

It would take 10-20 years for CFC levels to start falling if all production ended today due to leakage of CFC’s from old appliances, etc.