sulphur hexafluoride

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Noun1.sulphur hexafluoride - a colorless gas that is soluble in alcohol and ether; a powerful greenhouse gas widely used in the electrical utility industry
fluoride - a salt of hydrofluoric acid
greenhouse emission, greenhouse gas - a gas that contributes to the greenhouse effect by absorbing infrared radiation
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F-gases are man-made, and the most common in the EU are hydrofluorocarbons, perfluorocarbons, and sulphur hexafluoride. These were favourable for a time because they do not harm the ozone layer, have low toxicity, and are non-flammable.
These cameras typically allow the detection of dangerous gases such methane, sulphur hexafluoride and several hundred others accurately and safely.
Chlorotrifluoromethane (CClF3) a refrigerant which is being "phased out" has a GWP of 13,900, sulphur hexafluoride (SF6), used as an insulator in the electrical industry and in double glazing, has a GWP of 23,500, and nitrogen trifluoride (NF3), used as an etchant in microelectronics, has a GWP 16,000.
An alternative to the use of sulphur hexafluoride (one of the gases the Kyoto Protocol aims to reduce emissions of to control climate change) in high voltage substations, g3 technology contributes to a greener grid.
The contaminant gases tested are Sulphur Hexafluoride ([SF.sub.6]) and Sulphur Dioxide (S[O.sub.2]).
The contaminant gases tested are Sulphur Hexafluoride (S[F.sub.6]) and Sulphur Dioxide (S[O.sub.2]).
There are three main categories of these gases - hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulphur hexafluoride (SF6).
Under the Protocol, 37 countries ("Annex I countries") commit themselves to a reduction of four greenhouse gases (GHG) (carbon dioxide, methane, nitrous oxide, sulphur hexafluoride) and two groups of gases (hydrofluorocarbons and perfluorocarbons) produced by them, and all member countries give general commitments.
Less prevalent -- but very powerful -- greenhouse gases are hydrofluorocarbons, perfluorocarbons and sulphur hexafluoride
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