Thionyl Fluoride
Structural Formula Vector Image
Title: Thionyl Fluoride
CAS Registry Number: 7783-42-8
Additional Names: Thionyl difluoride
Molecular Formula: F2OS
Molecular Weight: 86.06
Percent Composition: F 44.15%, O 18.59%, S 37.26%
Line Formula: SOF2
Literature References: Usually prepd by the action of antimony trifluoride on thionyl chloride in the presence of antimony pentafluoride: Booth, Mericola, J. Am. Chem. Soc. 62, 640 (1940); Smith, Muetterties, Inorg. Synth. 6, 162 (1960). May also be prepared by the action of other fluorides on thionyl chloride: Kemmitt, Sharp, Adv. Fluorine Chem. 4, 228-229 (1965).
Properties: Colorless gas. Suffocating odor. Does not attack glass. Stored in compressed form in steel cylinders. mp -129.5°. bp -43.8°. Crit temp +88°. d (liq; -100°) 1.780. d (solid; -183°) 2.095. Trouton constant 22.6. Very slowly hydrolyzed by cold water. Sol in ether, benzene.
Melting point: mp -129.5°
Boiling point: bp -43.8°
Density: d (liq; -100°) 1.780; d (solid; -183°) 2.095
CAUTION: Highly irritating to eyes, respiratory tract.

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