Cholesterol Through Bromination

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The purpose of this experiment was to purify commercial Cholesterol through bromination and calculate the percent yield from recovery. Bromination, ice-bath and vacuum filtration were performed to form Cholesterol Dibromide from Cholesterol. In this experiment, 100 mg of Cholesterol was obtained and got dissolved in 2 mL of methyl-tert-butyl ether (MBTE). 110 μL of Bromine solution was added and mixed. Then, ice-bath cooled the solution. White, waxy solids were observed from the beaker and got vacuum filtrated. After the solid got dried, the mass and melting point were measured. Dicholoromethan is used as a solvent for reaction and water is the solvent for recrystallization. The solid found out to be the Cholesterol Dibromide because it melted

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