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Topic summary

Sulfur tetrafluoride

Sulfur tetrafluoride
Names IUPAC name
Sulfur(IV) fluoride
Other names
Sulfur tetrafluoride
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard100.029.103
RTECS number
  • WT4800000
UNII
UN number2418
  • InChI=1S/F4S/c1-5(2,3)4
    Key: QHMQWEPBXSHHLH-UHFFFAOYSA-N
  • InChI=1/F4S/c1-5(2,3)4
    Key: QHMQWEPBXSHHLH-UHFFFAOYAT
  • FS(F)(F)F
Properties SF4Molar mass108.07 g/mol Appearance colorless gas Density1.95 g/cm, −78 °C Melting point−121.0 °C Boiling point−38 °C reacts Vapor pressure10.5 atm (22 °C) Structure Seesaw (C2v) 0.632 DHazards Occupational safety and health (OHS/OSH):
Main hazards
highly reactive and toxic gas NFPA 704 (fire diamond)
3
0
2
W
NIOSH (US health exposure limits):
PEL (Permissible)
none
REL (Recommended)
C 0.1 ppm (0.4 mg/m)
IDLH (Immediate danger)
N.D. Safety data sheet (SDS) ICSC 1456Related 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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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 tetrafluoride is a useful reagent for the preparation of organofluorine compounds, some of which are important in the pharmaceutical and specialty chemical industries.

Wikipedia source