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Sulfur tetrafluoride

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Synonyms & Trade Names
Tetrafluorosulfurane
CAS No.
7783-60-0
RTECS No.
WT4800000
DOT ID & Guide
2418 125
Formula
SF₄
Conversion
1 ppm = 4.42 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
C 0.1 ppm (0.4 mg/m3)
OSHA PEL
none See Appendix G
Measurement Methods
OSHA ID110
See: NMAM or OSHA Methods
Physical Description
Colorless gas with an odor like sulfur dioxide. [Note: Shipped as a liquefied compressed gas.]
Molecular Weight
108.1
Boiling Point
-41°F
Freezing Point
-185°F
Solubility
Reacts
Vapor Pressure
(70°F): 10.5 atm
Ionization Potential
12.63 eV
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Relative Gas Density
3.78
Nonflammable Gas
Incompatibilities & Reactivities
Moisture, concentrated sulfuric acid, dioxygen difluoride [Note: Readily hydrolyzed by moisture, forming hydrofluoric acid & thionyl fluoride.]
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 nasal mucus)
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
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

See also
INTRODUCTION   ICSC CARD: 1456
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health