What happens to sulfuryl fluoride when exposed to an open flame?

When sulfuryl fluoride is exposed to an open flame, it undergoes decomposition that can produce corrosive substances, including hydrofluoric acid. This is a significant concern in fire scenarios because hydrofluoric acid is both highly corrosive and poses severe health risks upon exposure. The breakdown of sulfuryl fluoride at high temperatures results in these hazardous byproducts, underlining the need for caution when handling or encountering sulfuryl fluoride near potential ignition sources.

The other options do not accurately reflect the chemical behavior of sulfuryl fluoride when subjected to heat or flame. The substance does not decompose into harmless substances, it does not merely change to a gas without reaction, and it certainly does not ignite instantly in the manner flammable substances do.