E-grade rare gas

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Sulphur hexafluoride (SF6)


Description
Sulfur hexafluoride (SF6) is an inorganic, colorless, odorless, non-flammable, extremely potent greenhouse gas, which is an excellent electrical insulator. SF6 has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom. It is a hypervalent molecule. Typical for a nonpolar gas, it is poorly soluble in water but quite soluble in nonpolar organic solvents. It is generally transported as a liquefied compressed gas. It has a density of 6.12 g/L at sea level conditions, considerably higher than the density of air (1.225 g/L).



PHYSICAL AND CHEMICAL PROPERTIES
Appearance : Liquefied gas. Colorless gas Odor : No odor warning properties. Odor : Mixture contains one or more component(s) which have the following odor: No odor warning properties. Odor threshold : No data available. pH : Not applicable. Melting point/range : -59 °F (-50.8 °C) Boiling point/range : -83 °F (-64 °C) Flash point : Not applicable. Evaporation rate : Not applicable. Upper/lower explosion/flammability limit : No data available. Vapor pressure : 304.57 psia (21.00 bara) at 68 °F (20 °C) Sulphur hexafluoride Water solubility : 0.041 g/l Relative vapor density : 5 (air = 1) Relative density : 1.4 (water = 1) Partition coefficient (noctanol/water) : Not applicable. Auto-ignition temperature : No data available. Decomposition temperature : No data available. Viscosity : Not applicable. Molecular Weight : 146 g/mol Density : 0.381 lb/ft3 (0.0061 g/cm3) at 70 °F (21 °C) Note: (as vapor) Specific Volume : 2.62 ft3/lb (0.1636 m3/kg) at 70 °F (21 °C).



Hazard Statements
H280: Contains gas under pressure; may explode if heated. May displace oxygen and cause rapid suffocation.

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