perfluorocarbon
Noun: A perfluorocarbon is a type of synthetic chemical compound in which all the hydrogen atoms in a hydrocarbon have been replaced by fluorine atoms. These compounds are exceptionally stable, non-flammable, and are powerful greenhouse gases when emitted into the atmosphere.
Perfluorocarbons are industrial chemicals. Their primary usage note is that they are potent, long-lived greenhouse gases. They are not typically encountered in everyday contexts but are significant in industrial and environmental discussions.
- The atmospheric lifetime of some perfluorocarbons can exceed 10,000 years.
- Emissions of perfluorocarbon from aluminum smelting are carefully monitored.
- Scientists measure perfluorocarbon concentrations to study their impact on global warming.
- Industrial Source: Perfluorocarbons are primarily by-products of aluminum production and are also used in semiconductor manufacturing.
- Environmental Metric: Their global warming potential (GWP) is often thousands of times greater than that of carbon dioxide (CO₂) over a 100-year period.
- PFC: A common initialism for perfluorocarbon.
- Fluorocarbon: A broader category of compounds containing carbon and fluorine; all perfluorocarbons are fluorocarbons, but not all fluorocarbons are perfluorocarbons (as some may contain other atoms like hydrogen or chlorine).
- Hydrofluorocarbon (HFC): A related but distinct class of greenhouse gases that contain hydrogen, fluorine, and carbon.
- PFC (initialism)
- Fluorocarbon (in specific technical contexts where the compound is fully fluorinated)
The meaning of "perfluorocarbon" is highly specific to chemistry and environmental science. It does not have idioms or phrasal verbs associated with it. Its core meaning consistently refers to a fully fluorinated carbon compound with significant greenhouse gas properties.
- a powerful greenhouse gas emitted during the production of aluminum