NIOSH Pocket Guide to Chemical Hazards

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 Method
Bubbler; Sodium hydroxide; Ion-specific electrode; OSHA [#ID110] See: NMAM INDEX
Personal Protection & Sanitation
Skin: Frostbite
Eyes: Frostbite
Wash skin: N.R.
Remove: N.R.
Change: N.R.
Provide: Frostbite
First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support

Respirator Recommendations To be added later
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), weakness, rhinorrhea (discharge of thin nasal mucous)
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION