You are here


Submitted by eehardy on Mon, 12/03/2018 - 23:44

The air condenser was attached to the round bottom flask, and the solution was placed on the sand bath.  The flask gently boiled for 10 minutes and was then removed from the heat, allowing the solid within the flask to settle to the bottom.  During this time, a pressure filtration was set up.  Once the solid in the flask had settled to the bottom, the condenser was removed from the flask, and the liquid within the flask was transferred to a 25-mL Erlenmeyer flask (25.5g) by pressure filtration.  To the remaining solid in the round bottom flask, 2 mL of fresh TBME was added, and the flask was reheated for an additional three minutes on the sand bath.  The liquid in the round bottom flask was again removed via pressure filtration and placed into the same 25-mL Erlenmeyer flask.   The solvent in the Erlenmeyer flask was evaporated by passing a stream of air over the flask while the flask was also being warmed.  A pale yellow product remained in the flask once the solvent had evaporated, and the flask was allowed to sit and dry for an additional five minutes.