Sulfur tetrafluoride

Sulfur tetrafluoride
Structural formula of sulfur tetrafluoride, showing dimernsions
Ball-and-stick model of sulfur tetrafluoride
Ball-and-stick model of sulfur tetrafluoride
Space-filling model of sulfur tetrafluoride
Space-filling model of sulfur tetrafluoride
Names
IUPAC name
Sulfur(IV) fluoride
Other names
Sulfur tetrafluoride
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.029.103 Edit this at Wikidata
RTECS number
  • WT4800000
UNII
UN number 2418
  • InChI=1S/F4S/c1-5(2,3)4 checkY
    Key: QHMQWEPBXSHHLH-UHFFFAOYSA-N checkY
  • InChI=1/F4S/c1-5(2,3)4
    Key: QHMQWEPBXSHHLH-UHFFFAOYAT
  • FS(F)(F)F
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 reactive and toxic gas
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
3
0
2
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).
checkY verify (what is checkY☒N ?)

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,[3] some of which are important in the pharmaceutical and specialty chemical industries.

  1. ^ a b c d NIOSH Pocket Guide to Chemical Hazards. "#0580". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ Tolles, W. M.; W. M. Gwinn, W. D. (1962). "Structure and Dipole Moment for SF4". J. Chem. Phys. 36 (5): 1119–1121. Bibcode:1962JChPh..36.1119T. doi:10.1063/1.1732702.
  3. ^ Wang, C.-L. J. (2004). "Sulfur Tetrafluoride". In Paquette, L. (ed.). Encyclopedia of Reagents for Organic Synthesis. New York: J. Wiley & Sons. doi:10.1002/047084289X. hdl:10261/236866. ISBN 9780471936237.