Sulfur hexafluoride is a gas supplied in medical field as check gas in respiratory system due it is inert in body. That is mostly used as electric insulator. In contrast with its lot of applications, sulfur hexafluoride is a potent greenhouse gas
Formula and also structure: The sulfur hexafluoride chemical formula is SF6 and also its molar mass is 146.00554 g mol-1. The framework of sulfur hexafluoride is octahedron, through 6 fluorine atoms bound to a central sulfur atom. Every S-F bond has a 90º angle. Its chemical structure have the right to be written as below, in the usual representations provided for necessary molecules.
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Occurrence: Sulfur hexafluoride gas and the other SxFy gases, were no freely- developed by nature. However, in this days these are discovered in the atmosphere as part of greenhouse gases.
Preparation: Sulfur hexafluoride is synthesized by expositing element sulfur (crystal solid S8) and also elemental fluorine (gas F2) in ~ 300 ºC. After ~ the reaction finishes, the SF6 is purified by heating or alkali washing come remove other SxFy gases.
1/8S8 + 3F2 → SF6
Physical properties: sulfur hexafluoride is a colorless, tasteless and odorless gas. SF6 is non-flammable and it is six times heavier than air, its density is 6.602 g mL-1. That boiling point is -64 ºC. It is slightly soluble in water and other polar solvents. Sulfur hexafluoride is shipped as a liquefied gas.
Chemical properties: In spite, sulfur hexafluoride has 6 fluorine atoms, i m sorry is the most electronegative atom in the routine table, its dipole moment is 0. That is since the octahedral geometry enable the cancelation of every dipoles associated to the six S-F bonds. In consequence, sulfur hexafluoride is a non-polar molecule the is simply slightly soluble in polar compounds. Other vital fact around the chemistry that SF6, the is a really stable compound, therefore it cannot be enclosed by other chemical compounds and also can be current in the setting for many decades, i beg your pardon is an environmental problem.
Uses: Sulfur hexafluoride is broadly used, as dielectric medium in the production of electric equipment fan its high relative permittivity. The magnesium industry is the second significant consumed that sulfur hexafluoride, whereby it functions as a gas to fill casting forms. Thus, SF6 has a selection of application in the medicine, where it is used in retinal surgeries to repair the vitreous chamber. Moreover, sulfur hexafluoride is injected as comparison agent for ultrasound imaging.
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Health effects/safety hazards: sulfur hexafluoride is non-toxic, yet it might be dangerous once inhaled large quantity of gas and also it have the right to lead come asphyxia. SF6 is the most potent greenhouse gas (gas responsible through the worldwide warming) due its long-time life and also its capacity to absorb or emit radiation in the atmosphere.