Atomistry » Sulphur » Compounds » Sulphuryl Fluoride
Atomistry »
  Sulphur »
    Compounds »
      Sulphuryl Fluoride »

Sulphuryl Fluoride, SO2F2

Sulphuryl Fluoride, SO2F2 was obtained by Moissan and Lebeau by heating a gaseous mixture of sulphur dioxide and fluorine electrically with a platinum wire. By this method the resulting sulphuryl fluoride contains thionyl fluoride, sulphur dioxide and oxygen, the sulphur impurities being removable by water and the oxygen by cooling to -80° C., which leaves it uncondensed.

The combustion of fluorine in moist hydrogen sulphide or the interaction of fluorine and dry hydrogen sulphide in a glass vessel (the last- named supplying the necessary oxygen) also gives rise to a mixture of sulphuryl fluoride with thionyl fluoride, sulphur hexafluoride and silicon fluoride.

Sulphuryl fluoride is a colourless, odourless gas, which liquefies at -52° C. and solidifies in liquid air, melting then at -120° C. It is remarkably stable, and dissolves unchanged in water to the extent of approximately 1 volume in 10 at the ordinary temperature; alcohel absorbs about three volumes of the gas at the ordinary temperature.

Chemically the gas is surprisingly inactive. It is unaffected by water at 150° C., but an aqueous solution of potassium hydroxide causes decomposition into potassium fluoride and sulphate:

SO2F2 + 4KOH = K2SO4 + 2KF + 2H2O.

It attacks glass at a red heat, giving silicon tetrafluoride and sulphur trioxide. Carbon and boron are without action on the gas at a red heat, but sodium at a temperature considerably above the melting-point causes gradual decomposition with absorption. Hydrogen sulphide, aided by heat, attacks both thionyl and sulphuryl fluorides, inducing decomposition.

Last articles

Zn in 8WB0
Zn in 8WAX
Zn in 8WAU
Zn in 8WAZ
Zn in 8WAY
Zn in 8WAV
Zn in 8WAW
Zn in 8WAT
Zn in 8W7M
Zn in 8WD3
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy