A friend, who is living in the desert, asked me, how he could convert amphetamine sulfate to amphetamine hydrochloride. He has nothing but NaOh, Hcl 33% and dest water. I recommended: Dissolve the sulfate in DH2O, neutralise with a little exess of Naoh, separate the evolving freebase (He has no sep funnel,but this his problem),drop the freebase into dilute HCL until neutral, boil off the water - e voila! Amphetamine Hcl.
Should work like this, no? Any better suggestions are more than welcome.