Sulfur Hexafluoride Gas for GIS, Switchgear & Semiconductor
DSW supplies high-purity sf6 sulfur hexafluoride and sf6 sulphur hexafluoride gas in certified seamless steel cylinders for electrical insulation, arc suppression, and industrial applications.
Our sulfur hexafluoride and sulphur hexafluoride cylinders meet international standards and are widely used in gas-insulated switchgear (GIS), high-voltage switchgear, substations, and semiconductor systems.
We offer SF6 gas in a range of purities and in various cylinder, drum, and bulk tank sizes to suit your specific application requirements.
What Is Sulfur Hexafluoride (SF6) Gas?
Sulfur hexafluoride (also known as sulphur hexafluoride, sf6 sulfur hexafluoride, or sf6 sulphur hexafluoride) is a colorless, odorless, non-flammable hexafluoride gas with extremely high dielectric strength.
It is widely used as an electrical insulating gas and arc-quenching medium in high-voltage equipment.
- CAS No.: 2551-62-4
- Molecular Formula: SF6
- Boiling Point: −63.8°C
Certificate of Analysis (COA)
Sulfur Hexafluoride (SF₆) Gas
| Product Information | |||
|---|---|---|---|
| Product Name | Sulfur Hexafluoride (SF₆) | Cylinder Capacity | 50 kg |
| Standard Purity | ≥ 99.99% | Cylinder No. | ________________ |
| Barcode | ________________ | Analysis Date | ________________ |
| No. | Test Item | Specification | Unit |
|---|---|---|---|
| 1 | SF₆ Purity | ≥ 99.99 | % |
| 2 | Air | ≤ 30 | ppm |
| 3 | CF₄ | ≤ 5 | ppm |
| 4 | H₂O (Moisture) | ≤ 3 | ppm |
| 5 | C₂F₆ | ≤ 40 | ppm |
| 6 | C₃F₈ | ≤ 15 | ppm |
| 7 | Acidity (as HF) | ≤ 0.1 | ppm |
| 8 | Hydrolysable Fluoride (as HF) | ≤ 0.4 | ppm |
| 9 | Mineral Oil | ≤ 3 | ppm |
| 10 | Toxicity | Non-toxic | — |
| Quality Inspector:
_______________________ |
Approved By:
_______________________ |
Technical Specifications of SF6 Gas Cylinders
| Item | Specification |
|---|---|
| Purity | 99.995% / 99.999% |
| Cylinder Capacity | 40L / 47L / 50L / 500L |
| Working Pressure | 15 MPa / 20 MPa |
| Cylinder Standard | DOT / ISO9809 / GB |
| Material | Seamless high-strength steel |
| Valve Type | CGA590 / QF-2 / Customized |
Formula of Sulfur Hexafluoride
Key Benefits of SF6 Gas
- Superior Dielectric Strength – Exceptional insulation for GIS and high-voltage systems.
- Reliable Arc Suppression – Rapid arc extinction ensures equipment safety.
- Chemical Stability – Non-reactive under normal operating conditions.
- Global Export Compliance – Manufactured and tested according to international standards.
Main Applications
Electrical Power Industry
- Gas insulated switchgear (GIS)
- High-voltage circuit breakers
- Transformers and substations
- Power distribution equipment
Semiconductor & Electronics
- Plasma etching gas
- Process chamber cleaning
- Microelectronics production
Laboratory & Calibration
- Gas detection calibration mixtures
- Scientific tracer gas studies
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