Ok.. Not sure about the part with the CaCl tube, but if i understood you correctly, what you're sayin is that the MeAm xtals are boiled/refluxed in a flask of "Absolute Alcohol" (volume?) for about half-an-hour to an hour. Whatever settles to the bottom is basically crap. The solution is allowed to cool down to r/t, at which point the MeAm xtals come out of solution, are filtered out (not sure if you mean vac-filtered?) and then the remaining absolute alcohol is good to go for your next batch?
Also, you said that n-butyl alcohol (if can be obtained) is better for this then absolute alcohol (solubility of NH4Cl, etc). Would the clean up be done the same way?
What did you mean by:
"but as a rule three extractions carried out at 90–100° with 4–6 parts of fresh butyl alcohol for each extraction result in a substantially complete separation"?
Last thing: Does either one of these clean up jobs remove foreign smell from the MeAm xtals that result from the synth? And.. do these clean ups REPLACE chloroform or acetone washing? (mind you.. if you wouldn't mind explaining how chloroform/acetone washes are carried out, I would be much obliged)
Thanks in advance - Peace out