NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

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. 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
UEL: NA
LEL: NA

Nonflammable Gas
Incompatibilities & Reactivities

Disilane
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

Respirator Recommendations
Not available.
Important additional information about respirator selection
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