Sulfur tetrafluoride
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Sulfur tetrafluoride is the chemical compound with the formula SF4. It is a colorless corrosive gas that releases dangerous HF upon exposure to water or moisture. Despite these unwelcome characteristics, this compound is a useful reagent for the preparation of organofluorine compounds,[3] some of which are important in the pharmaceutical and specialty chemical industries.
Quick Facts Names, Identifiers ...
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Names | |||
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IUPAC name
Sulfur(IV) fluoride | |||
Other names
Sulfur tetrafluoride | |||
Identifiers | |||
3D model (JSmol) |
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ChEBI | |||
ChemSpider |
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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 |
highly toxic corrosive | ||
NFPA 704 (fire diamond) | |||
NIOSH (US health exposure limits): | |||
PEL (Permissible) |
none[1] | ||
REL (Recommended) |
C 0.1 ppm (0.4 mg/m3)[1] | ||
IDLH (Immediate danger) |
N.D.[1] | ||
Safety data sheet (SDS) | ICSC 1456 | ||
Related compounds | |||
Other anions |
Sulfur dichloride Disulfur dibromide Sulfur trifluoride | ||
Other cations |
Oxygen difluoride Selenium tetrafluoride Tellurium tetrafluoride | ||
Related sulfur fluorides |
Disulfur difluoride Sulfur difluoride Disulfur decafluoride Sulfur hexafluoride | ||
Related compounds |
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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