Fluorocarbons are chemical compounds with carbon-fluorine bonds. Compounds that contain many C-F bonds often have distinctive properties, e.g., enhanced stability, volatility, and hydrophobicity. Several fluorocarbons and their derivatives are commercial polymers, refrigerants, drugs, and anesthetics.
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👉 Perfluorocarbons in the context of Fluorinated gases
Fluorinated gases (F-gases) is a term used by regulators to refer to fluorinated greenhouse gases. Major classes include hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulphur hexafluoride (SF6). They are used in refrigeration, air conditioning, heat pumps, fire suppression, electronics, aerospace, magnesium industry, foam, and high voltage switchgear. Their use is regulated due to their strong global warming potential.
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) also contain fluorine and are often found in gas form, but are not generally described as fluorinated gases.
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Perfluorocarbons in the context of Greenhouse gas
Greenhouse gases (GHGs) are the gases in an atmosphere that trap heat, raising the surface temperature of astronomical bodies such as Earth. Unlike other gases, greenhouse gases absorb the radiations that a planet emits, resulting in the greenhouse effect. The Earth is warmed by sunlight, causing its surface to radiate heat, which is then mostly absorbed by greenhouse gases. Without greenhouse gases in the atmosphere, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F). Human-induced warming has been increasing at a rate that is unprecedented in the instrumental record, reaching 0.27 [0.2–0.4] °C per decade over 2015–2024. This high rate of warming is caused by a combination of greenhouse gas emissions being at an all-time high of 53.6±5.2 Gt CO2e yr−1 over the last decade (2014–2023), as well as reductions in the strength of aerosol cooling.
The five most abundant greenhouse gases in Earth's atmosphere, listed in decreasing order of average global mole fraction, are: water vapor, carbon dioxide, methane, nitrous oxide, ozone. Other greenhouse gases of concern include chlorofluorocarbons (CFCs and HCFCs), hydrofluorocarbons (HFCs), perfluorocarbons, SF
6, and NF
3. Water vapor causes about half of the greenhouse effect, acting in response to other gases as a climate change feedback.
Perfluorocarbons in the context of Top contributors to greenhouse gas emissions
This article is a list of locations and entities by greenhouse gas emissions, i.e. the greenhouse gas emissions from companies, activities, and countries on Earth which cause climate change. The relevant greenhouse gases are mainly: carbon dioxide, methane, nitrous oxide and the fluorinated gases bromofluorocarbon, chlorofluorocarbon, hydrochlorofluorocarbon, hydrofluorocarbon, nitrogen trifluoride, perfluorocarbons and sulfur hexafluoride.
The extraction and subsequent use of fossil fuels coal, oil and natural gas, as a fuel source, is the largest contributor to global warming.
Perfluorocarbons in the context of Bromofluorocarbon
Bromofluorocarbons (BFCs) are molecules based on carbon, bromine, and fluorine. The most common use has traditionally been in fire suppression systems. The brand name "Halon" is frequently used interchangeably for BFCs. However, not all Halons are technically BFCs (some contain chlorine also).
BFCs attack the ozone layer even more aggressively than chlorofluorocarbons (CFCs), and are powerful greenhouse gases, although due to shorter atmospheric lifetimes not as powerful as equivalent perfluorocarbons or chlorofluorocarbons. Nevertheless, BFCs are still used in some ships and aircraft, because replacements are not as effective. As production of BFCs was banned by the Montreal Protocol, remaining use depends on old inventories and on recycling.