Dioxygen difluoride

Dioxygen difluoride, also known as FOOF, is a compound of fluorine and oxygen with the formula O2F2. It decomposes rapidly, getting faster with increasing temperature. It is an extremely strong and reactive oxidizer that can make almost anything catch on fire. Here are some examples:

With methane, FOOF produces a violent explosion.

Ethanol, violent explosion.

Ammonia, vigorous reaction.

Water ice, explosion.

Chlorine, violent explosion.

Hydrogen sulfide, extremely violent explosion!