850 g of 13% aq. sodium hypochlorite solution is submitted in a large beaker, then 155 g of sodium bromide is added to the solution with stirring. Subsequently, 36 mL of acetone is added dropwise to the solution with stirring, after which it is allowed to react for 5 minutes. Thereafter the mixture is poured into a separatory funnel and the lower phase is collected. The solution is then washed with 50 mL of water. The solution may be fractionally distilled.
Dissolving the bromate in the solution
Addition of acetone