Yanxatech
1 / 1
| Chemical & Physical Properties | |||
|---|---|---|---|
| Chemical formula | SF6 | CAS No. | 2551-62-4 |
| Appearance | Colorless gas | Average Molar mass | 146.05 g/mol |
| Melting point | -62℃ | Molecular weight | 146.05 |
| Boiling point | -51℃ | Density | 6.0886kg/cbm |
| Solubility | Lightly soluble | ||
Primarily used as an insulating medium for a wide range of high voltage electrical and electronic equipment such as circuit breakers, switch gears and particles accelerators.
Insulating windows - reduced sound transmission and heat transfer.
In molten magnesium and aluminum production and purification.
High purity sulfur hexafluoride used in electronic and semiconductor applications.
| ITEM | SPECIFICATION | UNIT |
|---|---|---|
| Purity | ≥99.999 | % |
| O2 + Ar | ≤2.0 | ppmv |
| N2 | ≤2.0 | ppmv |
| CF4 | ≤0.5 | ppmv |
| CO | ≤0.5 | ppmv |
| CO2 | ≤0.5 | ppmv |
| CH4 | ≤0.1 | ppmv |
| H2O | ≤2.0 | ppmv |
| Hydrolyzable fluoride | ≤0.2 | ppm |
| Acidity | ≤0.3 | ppmv |
SF6 is mainly used in the electrical industry as a gaseous dielectric and insulator for high-voltage circuit breakers, switchgear, and GIS. It is also used in insulating windows, metal production, and semiconductor electronics.
It has a significantly higher dielectric strength than air or dry nitrogen, which makes it an exceptional insulator. This property helps drastically reduce the physical size of electrical transmission equipment.
Sulfur Hexafluoride is pressurized and typically supplied and transported in cylinders and drum tanks to ensure safe and efficient handling.
For electronic and semiconductor applications, high-purity Sulfur Hexafluoride is used, typically featuring a purity specification of ≥99.999%.
Yes, SF6 serves as a safer, gaseous dielectric alternative to older oil-filled circuit breakers (OCBs), which often contained harmful PCBs.
