Sulfur tetrafluoride
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, some of which are important in the pharmaceutical and specialty chemical industries.
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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 | |||
| 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) | ||
| Structure | |||
| Seesaw (C2v) | |||
| 0.632 D | |||
| Hazards | |||
| Occupational safety and health (OHS/OSH): | |||
Main hazards |
highly toxic corrosive | ||
| NFPA 704 (fire diamond) | |||
| NIOSH (US health exposure limits): | |||
PEL (Permissible) |
none | ||
REL (Recommended) |
C 0.1 ppm (0.4 mg/m3) | ||
IDLH (Immediate danger) |
N.D. | ||
| 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).
Infobox references | |||
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