Sulfur hexafluoride, or SF6, is an extremely stable, non-flammable and highly electronegative gas with excellent dielectric properties. It is commonly used in medium and high-voltage electrical equipment as an electrical insulator, arc-quenching and cooling medium.

However, SF6 is classified as a potent greenhouse gas, with a global warming potential of 22,800 greater than that of CO2. Its extreme stability means that it is able to last within the atmosphere for approximately 3,500 years, longer than any other compound. As a result, there are strict protocols relating to SF6 gas emissions.

Though primarily used within the electrical industry, SF6 gas has been adopted in a number of other applications.

  • Gas-insulated high-voltage equipment, such as CT scanners, particle accelerators and electron microscopes
  • Medical monitoring and analysis, such as within Ophthalmology
  • Utilised as a cleaning agent within chemical vapour deposition (CVD) within semiconductor manufacturing
  • During magnesium production as a protective gas, to prevent rapid oxidation and spontaneous combustion

Further application information can be found through the links below. Alternatively, please contact Cambridge Sensotec to discuss your requirements further.