Tribromine octoxide is a binary inorganic compound of bromine and oxygen with the chemical formula Br3O8.
[1][2] This is a free radical and one of the most complex bromine oxides.
A reaction of Br2 with O3 at 273 K and low pressure.
[3][4][5] The compound forms a white solid.
[6] It exists in two forms which are both soluble in water.