>>19103985To a beaker add 50 mL of acetone, then stir in 30 mL of 30% hydrogen peroxide. Place the beaker in a
salt-ice bath and cool it to 5° C. After cooling, slowly add 3 mL of 75% sulfuric acid drop by drop with an eye
dropper. Stir the mixture continuously while adding the acid, keep the temperature between 5° C to 10° C, stop adding acid if the temperature gets to high. It is very important that you moderate the reaction, high temperatures
will lower your yield and cause the formation of the less useful dicyclo isomer. After adding all the acid, continue
stirring for 5 minutes. Keep the mixture in the bath for 1 to 3 hours, or even up to 24 hours. After sitting, a white
precipitate should have formed. Filter the mixture to collect the crystals, then wash them with 300-500 mL of
water. Allow the crystals to dry before using, keep them damp if storing.
