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Disulfuryl fluoride

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Disulfuryl fluoride

Disulfuryl fluoride is an inorganic compound of sulfur, fluorine, and oxygen with the chemical formula S2O5F2.

Autoclave heating of sulfur trioxide and calcium fluoride:

The compound can be produced by the reaction of SSF2 and FOSO2F in deuterated chloroform at −100 °C:

It can also be produced in the reaction of iodine pentafluoride and sulfur trioxide.

Other methods are also known.

Pyrosulfuryl difluoride forms a colorless liquid that smokes slightly in the air. It causes severe suffocation and resembles phosgene in its action.

When heated, the compound is stable to a temperature of 200 °C.

It is slowly hydrolyzed by water:

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