(PFCs). A group of human-made chemicals composed of carbon and fluorine only: CF4 and C2F6. These chemicals, specifically CF4 and C2F6, (along with hydrofluorocarbons) were introduced as alternatives to the ozone depleting substances. In addition, they are emitted as by-products of industrial processes and are also used in manufacturing. PFCs do not harm the stratospheric ozone layer, but they are powerful greenhouse gases: CF4 has a global warming potential (GWP) of 6,300 and C2F6 has a GWP of 12,500.
Carbon-fluorine compounds that often contain other elements such as hydrogen, chlorine, or bromine. Common fluorocarbons include chlorofluorocarbons (CFCs) and related compounds, hydrofluorocarbons (HFCs), and perfluorcarbons (PFCs). They have been used as refrigerants, aerosol propellants, cleaning solvents, as well as in the manufacture of plastic foam. CFCs in particular are suspected of causing ozone depletion in the stratosphere. HFCs, which were introduced as alternatives to CFCs and are emitted as by-products of industrial processes and in manufacturing, are powerful greenhouse gases. (Source: Government of Canada Climate Change Site, Glossary of Climate Change Terms)
A group of synthetically produced compounds in which the hydrogen atoms of a hydrocarbon are replaced with fluorine atoms. The compounds are characterized by extreme stability, non-flammability, low toxicity, zero ozone depleting potential and high global warming potential.
A gas produced during the smelting of aluminium. They are listed as greenhouse gases in the Kyoto Protocol, and will need to be included in future inventories.
A group of human-made chemicals composed of carbon and fluorine only. These chemicals (predominantly CF4 and C2 F6 ) were introduced as alternatives, along with hydrofluorocarbons, to ozone-depleting substances. In addition, PFCs are emitted as by-products of industrial processes and are also used in manufacturing. PFCs do not harm the stratospheric ozone layer, but they are powerful greenhouse gases: CF4 has a global warming potential (GWP) of 6,500 and C2 F6 has a GWP of 9,200. (Source: U.S. Environmental Protection Agency)
A group of chemicals composed of carbon and fluorine only. PFCs are potentially emitted as by-products of industrial processes and are also used in manufacturing. PFCs do not harm the stratospheric ozone layer, but they are powerful greenhouse gases: CF4 has a global warming potential (GWP) of 6,500 and C2F6 has a GWP of 9,200. They have small uses as alternatives to ODS.
A group of human-made chemicals composed of carbon and fluorine only. These chemicals (predominantly CF4 and C2F6) were introduced as alternatives, along with hydrofluorocarbons, to the ozone depleting substances. In addition, PFCs are emitted as by-products of industrial processes and are also used in manufacturing. PFCs do not harm the stratospheric ozone layer, but they are powerful greenhouse gases: CF4 has a global warming potential (GWP) of 6,500 and C2F6 has a GWP of 9,200. () Persistent organic pollutants (POPs) Persistent organic pollutants (POPs) are chemical substances that persist in the environment, bioaccumulate through the food web, and pose a risk of causing adverse effects to human health and the environment. This group of priority pollutants consists of pesticides (such as DDT), industrial chemicals (such as polychlorinated biphenyls, PCBs) and unintentional by-products of industrial processes (such as dioxins and furans). (Source: UN Environment Programme)
Chemicals composed of one or two carbon atoms and four to six fluorine atoms, containing no chlorine. PFCs have no commercial uses and are emitted as a byproduct of aluminum smelting.
PFCs are among the six types of greenhouse gases to be curbed under the Kyoto Protocol. PFCs are synthetic industrial gases generated as a by-product of aluminum smelting and uranium enrichment. They also are used as substitutes for CFCs in the manufacture of semiconductors. There are no natural sources of PFCs. PFCs have atmospheric lifetimes of thousands to tens of thousands of years and 100-year GWPs thousands of times that of CO2, depending on the gas.
A group of greenhouse gases used in a range of industrial applications. PFCs are also produced during aluminium smelting. The GWPs of these gases range from 6,500 to 9,200.
Collective term for a series of totally fluorinated hydrocarbons (e.g., CF4, C2F6), which are present in the atmosphere as a result of anthropogenic activities. These species are very resistive to destruction in the atmosphere and thus have extremely long lifetimes (thousands of years). As a consequence of their extremely long lifetimes and strong infrared absorption features, the large greenhouse warming potentials of these compounds is of some concern.