Posted by Lynne on Saturday, June 5, 2010 at 10:18pm.
What are you using to recrystallize the aspirin? You must use a solvent in which the aspirin is soluble at high temperature but much less soluble at room temperature. But that seems such an obvious answer that I don't know if that addresses the question or not. For #2, again I don't know what you are using as a solvent but you don't want the fumes of a volatile solvent (ether or such) to come in contact with the hot plate. In order to answer these questions we really need to see the complete procdure.
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