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Names | |||
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IUPAC name
Sulfur(IV) fluoride
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Other names
Sulfur tetrafluoride
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Identifiers | |||
3D model (JSmol)
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ChEBI | |||
ChemSpider | |||
ECHA InfoCard | 100.029.103 | ||
PubChem CID
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RTECS number |
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UNII | |||
UN number | 2418 | ||
CompTox Dashboard (EPA)
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Properties | |||
SF4 | |||
Molar mass | 108.07 g/mol | ||
Appearance | colorless gas | ||
Density | 1.95 g/cm3, −78 °C | ||
Melting point | −121.0 °C | ||
Boiling point | −38 °C | ||
reacts | |||
Vapor pressure | 10.5 atm (22 °C)[1] | ||
Structure | |||
Seesaw (C2v) | |||
0.632 D[2] | |||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards
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highly reactive and toxic gas | ||
NFPA 704 (fire diamond) | |||
NIOSH (US health exposure limits): | |||
PEL (Permissible)
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none[1] | ||
REL (Recommended)
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C 0.1 ppm (0.4 mg/m3)[1] | ||
IDLH (Immediate danger)
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N.D.[1] | ||
Safety data sheet (SDS) | ICSC 1456 | ||
Related compounds | |||
Other anions
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Sulfur dichloride Disulfur dibromide Sulfur trifluoride | ||
Other cations
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Oxygen difluoride Selenium tetrafluoride Tellurium tetrafluoride | ||
Related sulfur fluorides
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Disulfur difluoride Sulfur difluoride Disulfur decafluoride Sulfur hexafluoride | ||
Related compounds
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Thionyl fluoride | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sulfur tetrafluoride is a chemical compound with the formula SF4. It is a colorless corrosive gas that releases dangerous hydrogen fluoride gas upon exposure to water or moisture. Sulfur tetrafluride is a useful reagent for the preparation of organofluorine compounds,[3] some of which are important in the pharmaceutical and specialty chemical industries.