 | |
| Names | |
|---|---|
| Preferred IUPAC name bis(fluorosulfonyl) sulfate | |
| Other names Trisulfuryl difluoride | |
| Identifiers | |
3D model (JSmol) | |
| |
| |
| Properties | |
| F2O8S3 | |
| Molar mass | 262.17 g·mol−1 |
| Appearance | colorless liquid |
| Density | 1.86 g/cm3[1] |
| Boiling point | 120 °C[1] |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Trisulfuryl fluoride is aninorganic compound of fluorine, oxygen, and sulfur with the chemical formulaS3O8F2.[2][3][4]
The compound is obtained by the thermal disassociation ofKBF4·4SO3 or via reaction ofpotassium tetrafluoroborate (KBF4) withsulfur trioxide (SO3) at 70 °C.[5]
Also, trisulfuryl fluoride is formed in a reaction ofsulfur trioxide (SO3),boron trifluoride (BF3), and 70%sulfuric acid (H2SO4) at 70 °C.[1]
Trisulfuryl fluoride is a reactive compound. It is known to decompose intodisulfuryl fluoride when heated. The compound reacts with certain compounds, like the sodiumcyanohydrin salt, to form other fluorosulfates.[6]
It slowly hydrolizes in the solution ofpotassium hydroxide (KOH):[5]
The compound forms a colorless liquid. It fumes in air and is insoluble in the concentratedH2SO4.[7][8]
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