Sulfur hexafluoride, SF6
Sulfur hexafluoride, SF6
Sulfur hexafluoride (SF₆) is a stable and efficient gas used in the electrical industry as an insulating gas in high-voltage equipment such as circuit breakers and switchgear. It prevents electrical discharges and extinguishes arcs, making it an important component in the operation of electrical equipment.
Sulfur hexafluoride (SF₆) is a colourless, odourless, non-toxic and non-flammable gas consisting of one sulphur atom and six fluorine atoms. It is chemically very stable and inert and does not react easily with other substances. SF₆ is about five times heavier than air (relative density ≈ 5.1), which is why it can accumulate in low spaces such as basements and displace happen.
The gas freezes solid at about -64°C at normal pressure and does not burn or support combustion. Its inert nature makes it safe for many engineering applications, but special care must be taken in confined spaces.
Sulphur hexafluoride chemical symbol: SF₆
Sulphur hexafluoride UN number: 1080
Valve: DIN 477 No. 6
Sulphur hexafluoride density: approx. 6,17 kg/m³
Relative density of sulphur hexafluoride: approx. 5,1 (air = 1)
Boiling point of sulphur hexafluoride at 0,101 MPa: -63,8 °C

