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Arsenic tribromide, also known as arsenic(III) bromide, is a chemical compound. Its chemical formula is AsBr3. It has arsenic and bromide ions in it. The arsenic is in its +3 oxidation state.
Arsenic tribromide is a white or pale yellow solid. It is highly toxic. It reacts with water to make arsenic trioxide and hydrobromic acid. It melts at a low temperature.
It is made by reacting arsenic and bromine.