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Octafluorocyclobutane C4F8

Product nameOctafluorocyclobutane C4F8



Dot Class:2.2

Other Names:Perfluorocyclobutane

CAS NO:115-25-3

Grade Standard:Electron Grade, Industrial Grade


Octafluorocyclobutane is a colorless, odorless and non-flammable gas

Octafluorocyclobutane is a colorless nonflammable gas. Octafluorocyclobutane may be harmful by asphyxiation. Exposure of the container to prolonged heat or fire can cause Octafluorocyclobutane to rupture violently and rocket. Octafluorocyclobutane is used to make other chemicals.

 Other names : Octafluorocyclobutane
 MF:  C4F8
 Formula weight :  200
 Density:  1.51
 CAS No: 115-25-3
 EINECS No: 204-075-2
 UN No: UN1976
 Purity:  99.9%-99.9999%
 Appearance:  Colorless

 Package Size:44 DOT Cylinder
 Filling Content/Cyl: 20KGS
 QTY Loaded in 20'Container: 200Cyls
 Cylinder Tare Weight: 50KGS
 Valve: CGA660

Application: In the production semiconductor materials and devices, octafluorocyclobutane serves as a deposition gas and etchant. It has also been investigated as a refrigerant in specialized applications, as a replacement for ozone depleting chlorofluorocarbon refrigerants. Exploiting its volatility and chemical inertness, octafluorocyclobutane may be found in some aerosolized foods. It is listed by the Codex Alimentarius under number E946.

In the electronics industry, octafluoropropane is mixed with oxygen and used as a plasma etching material for SiO2 layers in semiconductor applications, as oxides are selectively etched versus their metal substrates.

In medicine, octafluoropropane may compose the gas cores of microbubble contrast agents used in contrast-enhanced ultrasound. Octafluoropropane microbubbles reflects sound waves well and are used to improve the ultrasound signal backscatter. It is also used in pars plana vitrectomy procedures where a retina hole or tear is repaired. The gas acts to provide a long-term tamponade, or plug, of a retinal hole/tear and allows re-attachment of the retina to occur over the following several days post-op.


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