Specialty Gas

Sulfur Hexafluoride (SF6)

Sulfur Hexafluoride (SF6)
  • Sulfur Hexafluoride (SF6)
  • Sulfur Hexafluoride (SF6)
  • Sulfur Hexafluoride (SF6)
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    Specialty Gas

    Sulfur Hexafluoride (SF6)

    Sulfur hexafluoride is a colorless, odorless, non-toxic, non-flammable stable gas. It is one of the most chemically inert gases known, remaining stable at temperdatures up to approximately 400°F (204°C) in the presence of most materials. As a typically non-polar gas, it is slightly soluble in water and oil but highly soluble in non-polar organic solvents. When distilled water is saturated with Sulfur hexafluoride, the pH remains unchanged. It serves as a new generation of ultra-high voltage insulating dielectric material. High-purity electronic grade Sulfur hexafluoride is an ideal electronic etchant, typically transported as a liquefied compressed gas.

    Specifications
    • CAS No.: 2551-62-4
    • UN No.: 1080
    • EINECS No.: 219-854-2
    • Molecular Weight: 146.05 g/mol
    • Appearance: Colorless, odorless
    • Melting Point: -50.8 ℃
    • Boiling Point: -63.8 ℃
    • Density: 6.0886kg/m³
    • Hazard Class (DOT): 2.2
    • Label: Non-flammable gas
    Applications
    • Insulating Medium
    • Insulating Medium

    Insulating Medium
    SF6 is used in the electrical industry as a gaseous dielectric medium for high-voltage circuit breakers, switchgear, and other electrical equipment, often replacing oil-filled circuit breakers (OCBs) which may contain harmful PCBs.

    • Medical Applications
    • Medical Applications

    Medical Applications
    In retinal detachment repair surgery, SF6 is used in the form of bubbles to tamponade or block retinal holes.

    Packaging
    Gas Cylinder Specifications Contents
    Cylinder Capacity Cylinder Valve Weight
    40L CGA 590 / QF-2 50kg
    47L CGA 590 / QF-2 58kg
    50L CGA 590 / QF-2 62kg
    500L CGA 590 / QF-2 625kg
    Industrial Grade Sulfur Hexafluoride (SF6) 99.995%
    Purity ≥ 99.995%
    Air ≤ 10ppm
    Carbon Tetrafluoride (CF4) ≤ 2ppm
    Hexafluoroethane (C2F6) ≤ 20ppm
    Octafluoropropane (C3F8) ≤ 5ppm
    Low Sulfide Not Detected
    Moisture ≤ 1ppm
    Acidity as HF ≤ 0.1ppm
    Hydrolysable Fluoride as HF ≤ 0.3ppm
    Mineral Oil ≤ 1ppm
    Electronic Grade Sulfur Hexafluoride (SF6) 99.999%
    Purity ≥ 99.999%
    Oxygen (O2) +Argon Gas (Ar) ≤ 1ppm
    Nitrogen (N2) ≤ 2ppm
    Methane (CH4) ≤ 0.1ppm
    Carbon Monoxide ≤ 0.5ppm
    Carbon Tetrafluoride (CF4) ≤ 0.5ppm
    Carbon Dioxide (CO2) ≤ 0.5ppm
    Moisture ≤ 3ppm
    Hydrogen Fluoride (HF) ≤ 0.1ppm
    Hydrolysable Fluoride as HF ≤ 0.8ppm
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