Sulfur hexafluoride (SF6)
- Molecular formula: SF₆
- CAS NO.: 2551-62-4
- EINECS No.: 219-854-2
- Execution standards: GB/T 18867-2014, ASTMD2472, IEC376
- Package: Seamless steel cylinder
Other chemical names: Sulfur fluoride (SF6), Hexafluorosulfur, Hexafluorure de soufre
- Industrial grade sulfur hexafluoride (SF6) technical data:
| Sulfur hexafluoride (SF6) purity | ≥ 99.995% |
| air | ≤10 ppm |
| Carbon tetrafluoride | ≤2 ppm |
| Hexafluoroethane | ≤20 ppm |
| Octafluoropropane | ≤5 ppm |
| Low sulfide | Not Detected |
| water content | ≤1 ppm |
| Hydrogen fluoride | ≤0.1 ppm |
| Hydrofluoric acid hydrolysis fluoride | ≤0.3 ppm |
| mineral oil | ≤1 ppm |
2. Electronic grade sulfur Hexafluoride (SF6) technical data:
| Sulfur hexafluoride (SF6) purity | ≥99.999% |
| Oxygen + argon (O2+Ar) | ≤1 ppm |
| Nitrogen (N2) | ≤2 ppm |
| Methane (CH₄) | ≤0.1 ppm |
| Carbon monoxide (CO) | ≤0.5 ppm |
| Carbon tetrafluoride (CF₄) | ≤0.5 ppm |
| Carbon dioxide (CO₂) | ≤0.5 ppm |
| Moisture (H₂O) | ≤3 ppm |
| Hydrogen fluoride (HF) | ≤0.1 ppm |
| Hydrofluoric acid hydrolysis fluoride | ≤0.8 ppm |
Physical and chemical properties
Appearance and Characteristics: Colorless gas with a foul odor
Melting point (℃): -51
Boiling point (℃):/
Solubility: Difficult to dissolve in water
Relative density (water=1): 6.6
Critical temperature (℃): 45.6
Package:
| Cylinder capacity | 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 |
Application:
Sulfur hexafluoride is widely used in the electrical industry due to its excellent insulation and arc extinguishing properties, such as circuit breakers, high-voltage switches, high-voltage transformers, gas sealed composite capacitors, high-voltage transmission lines, transformers, etc. SF ₆ is also widely used in metal smelting (such as magnesium alloy melting furnace protective gas), aerospace, medical (X-ray machines, laser machines), meteorology (tracer analysis), chemical industry (advanced car tires, new fire extinguishers), etc. due to its chemical inertness, non toxicity, non flammability, and non corrosiveness. Electronic grade high-purity sulfur hexafluoride is an ideal electronic etchant widely used in the field of microelectronics technology. In the refrigeration industry, sulfur hexafluoride is used as a refrigerant, and the refrigeration range can be between -45 ℃ and 0 ℃.