Aluminium(III) bromide Aluminium bromide is any chemical compound with the empirical formula AlBrx. The species called `aluminium tribromide,` is the most common aluminium bromide. The species aluminium monobromide forms from the reaction of HBr with Al metal at high temperature. It disproportionates near room temperature: This reaction is rever..... Found on http://en.wikipedia.org/wiki/Aluminium_bromide