SF6 (Sulphur hexafluoride) is a colourless, odourless, non-toxic non-flammable gas with very low reaction chemistry. It is used by the electricity industry as a gaseous insulator for high-voltage circuit breakers, switchgear, and other electrical equipment, often replacing harmful PCB. SF6 gas has a much higher dielectric strength than air which makes it advantageous to the industry in allowing a significant reduction in the size of electrical equipment, which is easier to manage and maintain.
SF6 is also used in the magnesium industry, aircraft industry, semiconductor manufacturing and as a tracer gas for leak detection.
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