NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Sulfur tetrafluoride

CAS
7783-60-0

SF4

RTECS
WT4800000
Synonyms & Trade Names

Tetrafluorosulfurane
DOT ID & Guide
2418 / 125

Exposure
Limits

NIOSH REL: C 0.1 ppm (0.4 mg/m3)
OSHA PEL: none
IDLH
N.D. See: IDLH INDEX
Conversion
1 ppm = 4.42 mg/m3
Physical Description
Colorless gas with an odor like sulfur dioxide. [Note: Shipped as a liquefied compressed gas.]
MW: 108.1
BP: -41°F
FRZ: -185°F
Sol: Reacts
VP(70°F): 10.5 atm
IP: 12.63 eV
RGasD: 3.78

Fl.P: NA
UEL: NA
LEL: NA

Nonflammable Gas
Incompatibilities & Reactivities

Moisture, concentrated sulfuric acid, dioxygen difluoride [Note: Readily hydrolyzed by moisture, forming hydrofluoric acid & thionyl fluoride.]
Measurement Methods
OSHA ID110
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, skin and/or eye contact
Symptoms
Irritation eyes, skin, mucous membrane; eye, skin burns (from SF4 releasing hydrofluoric acid on exposure to moisture); liquid: frostbite; in animals: dyspnea (breathing difficulty), lassitude (weakness, exhaustion), rhinorrhea (discharge of thin mucus)
Target Organs
Eyes, skin, respiratory system
See also: INTRODUCTION