Climate change in Washington
More toxic pollutants such as hydrofluorocarbons and sulfur hexafluoride, are emitted in smaller rates and are known as High ... Carbon dioxide is the dominant GHG followed by methane, nitrous oxide, perfluorocarbon and sulfur hexafluoride (SF6). Non- ...
Hexafluorophosphate
PF6]− is isoelectronic with sulfur hexafluoride, SF6, and the hexafluorosilicate dianion, [SiF6]2−, and hexafluoroantimonate [ ...
ExoCube (CP-10)
The chamber is purged with sulfur hexafluoride while awaiting the launch date for the instrument's protection. ExoCube is also ...
1,1,1,2-Tetrafluoroethane
It can be used as an alternative to sulfur hexafluoride in magnesium smelting as a shielding gas. 1,1,1,2-Tetrafluoroethane was ...
Transformer
Their windings are enclosed in sealed, pressurized tanks and often cooled by nitrogen or sulfur hexafluoride gas. Experimental ...
Sulphur Bank Mine
The tracers used were Rhodamine-WT, sulfur hexafluoride, and a mixture of sulfur hexafluoride and neon-22. "The three sets of ... In 1901, the Sulphur Bank mine was sold to a group of New York bankers. By 1902, Sulphur Bank mine was operating as the Empire ... The sulfur would burn and convert to sulfur dioxide; the waste rock associated with the ore is known as calcine, or burnt rock ... Becker concluded the sulfur of Sulphur Bank was deposited after the cinnabar had been deposited, because he could find no ...
Infrared window
One kilogram of sulfur hexafluoride will, for example, cause as much warming as 26.7 tonnes of carbon dioxide over 100 years, ... "Determination of the atmospheric lifetime and global warming potential of sulfur hexafluoride using a three-dimensional model ... produce via degassing atmospheric concentrations of about 40 ppt for all perfluorocarbons and 0.01 ppt for sulfur hexafluoride ... nitrogen or sulfur are short-lived due to hydrolysis. This absorption is strengthened because these bonds are highly polar due ...
Chalcogen
... sulfur fluorides with high valences, such as sulfur hexafluoride, are stable and well-known. Sulfur tetrafluoride is also a ... If liquid sulfur above 190 °C is frozen very rapidly, the resulting sulfur is amorphous or "plastic" sulfur. Gaseous sulfur is ... Other notable sulfur allotropes include rhombic sulfur and monoclinic sulfur. Rhombic sulfur is the more stable of the two ... One difference is that sulfur-sulfur double bonds are far weaker than oxygen-oxygen double bonds, but sulfur-sulfur single ...
Robert J. Van de Graaff
More modern Van de Graaff generators are insulated by pressurized dielectric gas, usually freon or sulfur hexafluoride. During ...
Hypervalent molecule
An LCAO in, for example, sulfur hexafluoride, taking a basis set of the one sulfur 3s-orbital, the three sulfur 3p-orbitals, ... Phosphorus pentachloride (PCl5), sulfur hexafluoride (SF6), chlorine trifluoride (ClF3), the chlorite (ClO−2) ion, and the ... For a hexacoordinate molecule such as sulfur hexafluoride, each of the six bonds is the same length. The rationalization ... or sulfur ligands provide examples of Lewis acid-Lewis base hexacoordination. For the two similar complexes shown below, the ...
Sulfur compounds
Sulfur reacts with fluorine to give the highly reactive sulfur tetrafluoride and the highly inert Sulfur hexafluoride. Whereas ... The two principal sulfur oxides are obtained by burning sulfur: S + O2 → SO2 (sulfur dioxide) 2 SO2 + O2 → 2 SO3 (sulfur ... Sulfur mustard, a potent vesicant, was used in World War I as a disabling agent. Sulfur-sulfur bonds are a structural component ... Sulfur compounds are chemical compounds formed the element sulfur (S). Common oxidation states of sulfur range from −2 to +6. ...
Difluoroamino sulfur pentafluoride
A corona discharge in a sulfur hexafluoride, nitrogen mixture produces a small amount of difluoroamino sulfur pentafluoride. ... Difluoroamino sulfur pentafluoride is a gaseous chemical compound of fluorine, sulfur, and nitrogen. It is unusual in having a ... The axial fluorine to sulfur distance is 1.556 Å. Nitrogen sulfur distance is about 1.696 Å. The fluorine-nitrogen bond is the ... Difluoroamino sulfur pentafluoride has been prepared by irradiating a mixture of dinitrogen tetrafluoride and sulfur ...
Insulator (electricity)
Some high voltage equipment is designed to operate within a high pressure insulating gas such as sulfur hexafluoride. ...
Tetraoxygen difluoride
As an example, elemental sulfur reacts explosively to form sulfur hexafluoride even at −180 °C. Similar to [O2F]• or O2F2, ...
Chicago Climate Exchange
The exchange traded in emissions of six gases: carbon dioxide, methane, nitrous oxide, sulfur hexafluoride, perfluorocarbons ...
Switch
For example, the switch contacts may operate in a vacuum, immersed in mineral oil, or in sulfur hexafluoride. In AC power ...
Greenhouse gas
... sulfur hexafluoride (SF 6), hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs, sulphur hexafluoride (SF6), and nitrogen ... Greenhouse gases not listed explictly above include sulfur hexafluoride, hydrofluorocarbons and perfluorocarbons (see IPCC list ... as with anti-greenhouse effects causing gases like sulfur dioxide. The Annual Greenhouse Gas Index (AGGI) is defined by ...
Emissions Trading Scheme in South Korea
... and Sulfur hexafluoride. More than 525 business entities are subject to the ETS with specific emission targets set for each ...
Fugitive emission
... sulfur hexafluoride, and nitrogen trifluoride. Most occurrences of fugitive emissions are small, of no immediate impact, and ... "The increasing atmospheric burden of the greenhouse gas sulfur hexafluoride (SF6)". Atmos. Chem. Phys., 20: 7271-7290. doi: ...
Thermal conductivity and resistivity
An exception, sulfur hexafluoride, a dense gas, has a relatively high thermal conductivity due to its high heat capacity. Argon ...
Prospective Outlook on Long-term Energy Systems
The six Kyoto Protocol GHGs are covered (carbon dioxide, methane, nitrous oxide, sulphur hexafluoride, hydrofluorocarbons and ...
Fluorochemical industry
... when sold as uranium hexafluoride or sulfur hexafluoride. Because of difficulties in storage and handling, the price of ... Many alternatives to oil-filled switchgear, contain polychlorinated biphenyls (PCBs). Sulfur hexafluoride is also used in ... The second largest application for fluorine gas is for the production of sulfur hexafluoride, which is used as a dielectric ... Rhenium and tungsten hexafluorides are used for chemical vapor deposition of thin metal films onto semiconductors. ...
Radiation chemistry
If oxygen, acetone, nitrous oxide, sulfur hexafluoride or nitrobenzene is present in the mixture, then the reaction rate is ... "The reaction of sulfur hexafluoride with solvated electrons", The Journal of Physical Chemistry, 1968, 72, 4285-4289 Chapelle, ... In this study it was found that the addition of manganese dioxide to the coal increased the rate of sulfur removal. The ... For instance, the use of radiogenic hydrogen peroxide (formed by irradiation) to remove sulfur from coal has been reported. ...
Coolant
Sulfur hexafluoride is used for cooling and insulating of some high-voltage power systems (circuit breakers, switches, some ... Anhydrous ammonia is frequently used in large commercial systems, and sulfur dioxide was used in early mechanical refrigerators ...
Global warming potential
... conversely sulfur hexafluoride has a GWP of 22,800 over 100 years but 16,300 over 20 years (IPCC Third Assessment Report). The ...
Helium
The opposite effect, lowering resonant frequencies, can be obtained by inhaling a dense gas such as sulfur hexafluoride or ... Helium can form unstable compounds, known as excimers, with tungsten, iodine, fluorine, sulfur, and phosphorus when it is ...
Disulfur decafluoride
It is produced by the electrical decomposition of sulfur hexafluoride (SF6)-an essentially inert insulator used in high voltage ... Each sulfur atom of the S2F10 molecule is octahedral, and surrounded by five fluorine atoms and one sulfur atom. The two sulfur ... Br2 Disulfur decafluoride arises by the decomposition of sulfur hexafluoride. ... S 2F 10 + N 2F 4 → 2 SF 5NF 2 In the presence of excess chlorine gas, S 2F 10 reacts to form sulfur chloride pentafluoride (SF ...
Regulation of greenhouse gases under the Clean Air Act
... sulfur hexafluoride (SF6) This action allowed the EPA to set the greenhouse gas emission standards to light-duty vehicles ... and sulfur hexafluoride - may reasonably be anticipated to endanger both public health and public welfare; and that GHG ... and sulfur hexafluoride (SF6). These greenhouse gases in the atmosphere constitute the "air pollution" that threatens both ...
ATLAS-I
The open-air third floor held large inflatable gas bags which could store the sulfur hexafluoride (SF6) gas from the Marx ... Each generator was enclosed in a large fiberglass structure which was filled with sulfur hexafluoride (SF6) acting as an ...
Dielectric strength
For gases (e.g. nitrogen, sulfur hexafluoride) it normally decreases with increased humidity as ions in water can provide ...
Andy Watson (scientist)
Watson, A. J., Liddicoat, M. I. and J. R. Ledwell (1987). "Perfluorodecalin and sulphur hexafluoride as purposeful marine ... he developed techniques for tracking ocean water bodies using tracers such as sulphur hexafluoride and perfluorodecalin. He and ...