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Unformatted text preview: swirling in order to ensure good mixing. The solution will become hot as the exothermic salt formation progresses. 3) The solution is seeded with 1-2 crystals of the (S)phenylethylammonium–(2R,3R) tartrate salt. These crystals are prismatic in shape and are easily identifiable from the other diastereomer, which has long, thin needle like crystals. 4) The solution should be corked (with a cork or a rubber septa – NOT a ground glass stopper ), wrapped with parafilm, labeled and allowed to sit until the following lab meeting in order to allow for slow crystallization of the desired product. It is extremely important that the flask is sealed tightly so that the methanol does not evaporate, causing BOTH diastereomers to precipitate....
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