Jacked is definitely right about FB reactions, UTFSE for info on starting it off,For the hot and fast method SWIM mixes red with FB pseudo, places in flask, which is in turn placed in freezer, Iodine weighed out and placed in freezer,ICE water bath is prepared. flask and iodine removed from freezer, flask placed in the ice bath. Iodine added -flask quickly sealed, A 3 cc syringe with DH2O is insereted in tubing, Remove flask from ice and slowly warm contents with palm of hand. Once the glass is not so cold to the touch inject a small amount of water, adding it a few drops at a time DONT OVER DO IT HERE.WHAN WATER CONTACTS INGREDIENTS A NEARLY SPONTANEOUS REACTION OCCURS, KEEP IN ICE BATH UNTIL RX CALMS DOWN SOME. THEN EXTERNAL HEATING WILL CONTINUE THE RX. the second illustration
shows a better appoach. most of the Pseudo FB falls out in tube, vacuum is used to pull instead of push , the fb melts quicker, and airflow is increased, moving fb over much quicker, a solvent trap is required still, evap solvent to get Fb pseudo, this cuts off several steps, one more thing.... SWIM's had 85% yeilds lately, USING TOLUENE FOR THE np IN THE FINAL WORKUP, IT DOESNT TEND TO FORM EMULSIONS AND LYE WILL NOT STAY IN IT.
To Those unable to find glass, you can replace the horizontal 2 inch pipe with another material and use a shoter/ smaller diameter glass tube from the end of horizontal tube into the solvent flask