swim used to make the sulphate with sulfurc 20% in ipa, added to dcm, but diden't get big xtals.
it seems the freebase in acetone thing worked for him the best for big white chunks, want to try the acetonitrile thing though for single solvent xtalization. ipa gassed whtn ipa plus diititional ips and let sit in freezer worked also well.
z
Go Ugly Early