Industry Electronic Gases Sulfur Hexafluoride Gas Gaseous
Electronic Gases Sulfur hexafluoride (SF6) is a colorless
in-noxious and non-flammable gas at atmospheric temperature.. It is
chemical stable with good insulation.
Sulfur hexafluoride (SF6) is an inorganic, colorless, odorless,
non-flammable, extremely potent greenhouse gas, which is an
excellent electrical insulator. SF6 has an octahedral geometry,
consisting of six fluorine atoms attached to a central sulfur atom.
It is a hypervalent molecule. Typical for a nonpolar gas, it is
poorly soluble in water but quite soluble in nonpolar organic
solvents. It is generally transported as a liquefied compressed
It has a density of 6.12 g/L at sea level conditions, considerably
higher than the density of air
This substance undergoes chemical reactions only under relatively
severe circumstances. They are resistant to ignition, although they
may become flammable at very high temperatures. They may be
resistant to oxidation reduction, except in the most severe
conditions. These materials may be nontoxic. They can asphyxiate.
Contact of very cold liquefied gas with water may result in
vigorous or violent boiling of the product and extremely rapid
vaporization due to the large temperature differences involved. If
the water is hot, there is the possibility that a liquid
"superheat" explosion may occur. Pressures may build to dangerous
levels if liquid gas contacts water in a closed container [Handling
Chemicals Safely 1980].
Vapors may cause dizziness or asphyxiation without warning. Vapors
from liquefied gas are initially heavier than air and spread along
ground. Contact with gas or liquefied gas may cause burns, severe
injury and/or frostbite. Fire may produce irritating, corrosive
and/or toxic gases.
7.Some may burn but none ignite readily. Containers may explode
when heated. Ruptured cylinders may rocket.
1. Physical properties
|Standard Package Container||40L/150bar cylinder|
2. Typical technical data (COA)
|Grade Classification||GB/T12022-2006||High Purity|
|Hydrolyze fluoride(As HF) ppm||≤1||≤0.2|
|Mineral oil ppm||≤4||≤1|
|Electrical Industries Circuit Breaker|
Circuit breaker,high-voltage transmission line, CIS, large cable
coil, mutual inductor, lightning arrester.
As an inert gas
For the casting of magnesium.
|As an inert filling|
Insulated glazing windows.
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) that can contain harmful PCBs.
SF6 is used to provide a tamponade or plug of a retinal hole in
retinal detachment repair operations in the form of a gas
bubble.SF6 is used as a contrast agent for ultrasound imaging.
Sulfur hexafluoride microbubbles are administered in solution
through injection into a peripheral vein.
Sulfur hexafluoride was the tracer gas used in the first roadway
air dispersion model calibration; this research program was
sponsored by the U.S. Environmental Protection Agency and conducted
in Sunnyvale, California on U.S. Highway 101.Sulfur hexafluoride is
also routinely used as a tracer gas in laboratory fume hood