Hexafluoroethaneis a nonflammable, colorless, odorless liquefied compressed gas packaged in cylinders under its own vapor pressure of 430.3 psig at 70°F. It can cause rapid suffocation when concentrations are sufficient to reduce oxygen levels below 19.5%. Self-Contained Breathing Apparatus (SCBA) may be required for rescue workers. Contact with product can cause frostbite.