cfc
Definition
Noun: A CFC is a type of chemical compound known as a chlorofluorocarbon. It is a fluorocarbon that contains chlorine atoms. These compounds were historically manufactured for use as refrigerants in cooling systems (like air conditioners and refrigerators) and as propellants to spray contents from aerosol cans. A major environmental concern associated with CFCs is that their chlorine content contributes to the destruction of the ozone layer in the Earth's atmosphere.
Usage Examples
- The use of CFCs in spray cans was common before their environmental impact was understood.
- Scientists discovered that CFCs released into the atmosphere were responsible for creating a hole in the ozone layer.
- International agreements were signed to phase out the production of CFCs.
Advanced Usage
- "CFC-free": A label used to indicate that a product, such as an aerosol spray or a refrigerator, does not contain chlorofluorocarbons.
- This deodorant is labeled as CFC-free to assure customers it is less harmful to the environment.
Variants and Related Words
- Chlorofluorocarbon (n): The full chemical name for CFC; often used interchangeably.
- HCFC (n): Hydrochlorofluorocarbon; a related compound developed as a less damaging transitional replacement for CFCs.
- HFC (n): Hydrofluorocarbon; a later replacement for CFCs that does not contain chlorine and does not harm the ozone layer.
Synonyms
- Chlorofluorocarbon
- Freon (Note: Freon is a brand name for a specific group of CFCs and HCFCs commonly used as refrigerants.)
Related Phrases
- Ozone-depleting substance (ODS): The official category of chemicals, including CFCs, that are known to destroy atmospheric ozone.
- CFCs are classified as potent ozone-depleting substances.
- Montreal Protocol: The name of the international treaty designed to protect the ozone layer by phasing out the production of CFCs and other ODS.
- The Montreal Protocol is considered a landmark success in global environmental policy.
Noun
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a fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans
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the chlorine in CFCs causes depletion of atmospheric ozone
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