What was the primary use of CFCs before their ban in 1987?

CFCs, or chlorofluorocarbons, were primarily used as refrigerants in air conditioning systems and refrigeration units before their ban in 1987. Their unique chemical properties allowed them to efficiently absorb and release heat, making them effective in cooling applications. Additionally, CFCs were recognized for their stability, which contributed to their widespread use in various cooling devices and applications.

The environmental impact of CFCs, particularly their role in ozone depletion, led to significant regulatory changes and the eventual phasing out of these substances. While CFCs also had applications in other areas, such as solvents or foaming agents in plastics, the predominant and most critical use was in refrigeration and air conditioning. Understanding this context highlights the importance of considering both utility and environmental impact in the use of chemical substances.