# NIOSH Pocket Guide to Chemical Hazards
Sulfur hexafluoride | CAS 2551-62-4
SF6 | RTECS WS4900000
Synonyms & Trade Names Sulfur fluoride [Note: May contain highly toxic sulfur pentafluoride as an impurity.] | DOT ID & Guide 1080 126
Exposure Limits | NIOSH REL: TWA 1000 ppm (6000 mg/m3)
OSHA PEL: TWA 1000 ppm (6000 mg/m3)
IDLH N.D. | Conversion 1 ppm = 5.98 mg/m3
Physical Description Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Condenses directly to a solid upon cooling.]
MW: 146.1 | BP: Sublimes | FRZ: -83°F (Sublimes) | Sol(77°F): 0.003%
VP: 21.5 atm | IP: 19.30 eV | RGasD: 5.11 |
Fl.P: NA | UEL: NA | LEL: NA |
Nonflammable Gas
Incompatibilities & Reactivities Disilane
Measurement Methods NIOSH 6602
Personal Protection & Sanitation Skin: Frostbite Eyes: Frostbite Wash skin: No recommendation Remove: No recommendation Change: No recommendation Provide: Frostbite | First Aid (See procedures) Eye: Frostbite Skin: Frostbite Breathing: Respiratory support
Respirator Recommendations To be added later
Exposure Routes inhalation
Symptoms Asphyxia: increased breathing rate, pulse rate; slight muscle incoordination, emotional upset; lassitude (weakness, exhaustion), nausea, vomiting, convulsions; liquid: frostbite
Target Organs respiratory system
See also: INTRODUCTION