Disulfuryl chloride fluoride (pyrosulfuryl chloride fluoride) is an inorganic compound of sulfur, chlorine, fluorine, and oxygen with the chemical formula . Structurally, it is the chlorofluorosulfuric acid analog of disulfuric acid, or the mixed anhydride of chlorosulfuric acid and fluorosulfuric acid.
Rapid heating of fluorosulfonic acid and cyanuric chloride:
Also, a reaction of disulfuryl chloride () on silver monofluoride (AgF) at 80-90 ðC.
Disulfuryl chloride fluoride is a colorless liquid.
The compound hydrolyzes in water.