NIOSH Pocket Guide to Chemical Hazards

Sulfur hexafluoride

CAS 2551-62-4


RTECS WS4900000
Synonyms & Trade Names
Sulfur fluoride [Note: May contain highly toxic sulfur pentafluoride as an impurity.]
DOT ID & Guide
1080 126


NIOSH REL: TWA 1000 ppm (6000 mg/m3)
OSHA PEL: TWA 1000 ppm (6000 mg/m3)
IDLH N.D. See: IDLH INDEX 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

Nonflammable Gas
Incompatibilities & Reactivities
Measurement Methods
NIOSH 6602
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
Provide: Frostbite wash
First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support

Important additional information about respirator selection
Respirator Recommendations Not available.
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   See ICSC CARD: 0571