Quote from: mseller on January 11, 2013, 04:33 pmAmphetamine solubilities:                base           sulfatewater          slightly soluble     solubleethanol         soluble        slightly solubleether           soluble          insolublechloroform       soluble           insolublemol fraction caffeine solubilityconsider that water solubility is 1g/50ml very similar to acetoneThe mole fraction solubility x of caffeine in water, ethyl acetate, ethanol, methanol, chloroform, Mole Fraction Solubility of caffeine in Solvents at 323 K solvent         10^3x (higher value has better solubility))---------        ------------water           10.151methanol        5.859ethanol          5.512acetone         12.322dichlormetane     50.548chloroform       94.032ethyl acetate      9.946Still have some speed so I will try to wash first with chloroform to remove caffeine then with ether. Amph is insouble in chloroform and ether.Will post result when I finish.This post is gold. But I was under the impression that caffeine is *not* soluble in acetone, and an acetone wash will *not* remove caffeine (except for the miniscule amounts the trace H2O in the acetone picks up). Is this really correct? I mean am *I* really correct.