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Sulfur hexafluoride is a nontoxic gas, but by displacing oxygen in the lungs, it also carries the risk of asphyxia if too much is inhaled. [55] Since it is more dense than air, a substantial quantity of gas, when released, will settle in low-lying areas and present a significant risk of asphyxiation if the area is entered.
Sulfur hexafluoride circuit breakers protect electrical power stations and distribution systems by interrupting electric currents, when tripped by a protective relay. Instead of oil, air, or a vacuum, a sulfur hexafluoride circuit breaker uses sulfur hexafluoride (SF 6 ) gas to cool and quench the arc on opening a circuit.
Addition of sulfur hexafluoride can dramatically improve the dielectric properties of poorer insulators, e.g. helium or nitrogen. [2] Multicomponent gas mixtures can offer superior dielectric properties; the optimum mixtures combine the electron attaching gases ( sulfur hexafluoride , octafluorocyclobutane ) with molecules capable of ...
They are divided into several types, the main of those are hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulphur hexafluoride (SF6). They are used in refrigeration, air conditioning, heat pumps, fire suppression, electronics, aerospace, magnesium industry, foam and high voltage switchgear.
Sulfur hexafluoride is nearly inert and non-toxic due to steric hindrance (the six fluorine atoms are arranged so tightly around the sulfur atom that it is extremely difficult to attack the bonds between the fluorine and sulfur atoms). It has several applications due to its stability, dielectric properties, and high density.
Sulfur fluoride may refer to any of the following sulfur fluorides: Sulfur hexafluoride, SF 6; Disulfur decafluoride, S 2 F 10; Sulfur tetrafluoride, SF 4; Disulfur tetrafluoride, S 2 F 4; Sulfur difluoride, SF 2; Disulfur difluoride, S 2 F 2; Thiothionyl fluoride, S 2 F 2 (second isomer) 1,3-Difluoro-trisulfane-1,1-difluoride, S 3 F 4
The self-healing property refers to that if the SF6 is exposed to an arc, the SF6 disassociates into various sulfur, fluorine, and sulfur-fluorine molecules. When the arc shuts down, the sulfur reacts with the fluorine, producing SF6 again. The main thing is that the fluorine is not free to react with the circuit breaker parts.
Sulfur chloride pentafluoride is an inorganic compound with the formula SF 5 Cl. It exists as a colorless gas at room temperature and is highly toxic, like most inorganic compounds containing the pentafluorosulfide (– SF 5 ) functional group. [ 1 ]