Table 4 Use pattern of CFCs, HCFCs and fluorinated hydrocarbons
From: The role of waste management in the control of hazardous substances: lessons learned
Area of use | Type of chemical used | Application |
|---|---|---|
Cooling agent (freezers, refrigerators…) | F-11 → HCFCs → Pentane | Closed |
Propellant gases for aerosols | F-11, F-12 → F-134a and other fluorinated hydrocarbons → Propane/Butane → pressurized air | Open |
Foam blowing agent for polyurethane and polystyrene | F-11, F-12 → F-22 → F-134a, F-152a | Open |
Air condition for automobiles | F-22 → F-134a → 2,3,3,3- → CO2 | partially open |