High Purity Sulfur Hexafluoride Gas SF6 Gas

  • HS
  • Made in China
  • 15 to 30 days
  • Annual output of 100,000 cubic meters

High purity sulfur hexafluoride gas SF6 gas
Product Information:
1, sulfur hexafluoride, is an inorganic compound, chemical formula SF6, under normal temperature and pressure is colorless, odorless, non-toxic and non-flammable stable gas, molecular weight of 146.055, at 20℃ and 0.1 MPa density of 6.0886kg/m3, about 5 times the density of air,

2. The substructure of sulfur hexafluoride is octahedral with small bonding distance and high bonding energy, so its stability is very high. When the temperature does not exceed 180℃, its compatibility with electrical structure materials is similar to nitrogen.

3, melting point: -50.8℃, boiling point: -63.8℃ (sublimation), critical temperature: 45.6℃, critical pressure: 3.76mpa, saturated vapor pressure: 2450kPa (25℃), appearance: colorless odorless gas, solubility: slightly soluble in water, soluble in ethanol, ether

4, alias: High purity SF6 GAS, SF6 GAS, Sulfur hexafluoride GAS, GAS purity, High purity

5, storage: the use of seamless steel cylinders: such as 40 litres, 50 litres, 60 litres, 68 litres, 70 litres, 80 litres and so on.

Chemical formula: SF6

Molecular weight: 146.055

CAS no. : 2551-62-4

MDL number: MFCD00011447

EINECS no. : 219-854-2

RTECS number: WS4900000

Physical properties

Density: 6.0886 kg/m3

Melting point: 50.8 ℃

Boiling point: -63.8℃ (sublimation)

Critical temperature: 45.6℃

Critical pressure: 3.76mpa

Saturated vapor pressure: 2450kPa (25℃)

Appearance: colorless and odorless gas

Solubility: slightly soluble in water, soluble in ethanol and ether

High purity SF6 GAS

Gas safety tips:

1. Sulfur hexafluoride is an asphyxiant that, at high concentrations, can cause dyspnea, wheezing, blue skin and mucous membranes, and systemic convulsions. After inhaling a mixture of 80% sulfur hexafluoride and 20% oxygen for a few minutes, the human body will experience numbness in the limbs and even death by suffocation.


2. Sulphur hexafluoride is about five times denser than air, so a person breathing it would emit mechanical waves with longer wavelengths, making him sound more like a man. Helium, on the other hand, would emit shorter wavelengths, making him sound more like a woman.

Use cylinder: 40L or 50L

Shandong Hongsheng Pressure Vessel Co., Ltd. is willing to be your long-term partner and chief cylinder safety officer, and jointly escort your cylinder safety.


SF6 gas


As an insulating gas, SF6 has many advantages. It is a colorless, tasteless, non-toxic and non-flammable inert gas, and has excellent cooling arc characteristics, especially in the switching equipment with high arc temperature under the action of high cooling effect, to avoid the possibility of local high temperature.


The insulation performance of SF6 is much better than that of traditional oil and air insulation media. Used in electrical equipment, it can reduce the size of equipment and improve the reliability of insulation.

The disadvantage is that in the arc discharge, the decomposition of sulfur into low-fluorine compounds, not only toxic, and some insulating materials and metal corrosion.

SF6 is a relatively heavy gas. Under the same conditions, its density is 5 times that of air, and the relation between pressure and temperature follows the ideal gas law.


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