Name:iron bromide, ferric bromide Other name: Ferric bromide; Iron bromide (FeBr3); Iron tribromide; iron(3+) tribromide CAS No.：10031-26-2 EINECS ：233-089-1 Formuala：FeBr3 Formula weight：295.557 Appearance: black crysalline powder. Iron bromide, chemical formula FeBr3, brownish yellow or crimson brown solid. Soluble in water, soluble in water, slightly acidic, and its aqueous solution can crystallize dark green FeBr3 • 6H2O. Soluble in an electronic solvent (such as ether or ethanol). Solid iron bromide has a polymer structure similar to ferric chloride. Each iron atom is six coordinated and has a eight - surface structure, which is linked to six bromine atoms.