Supercritical Butane Salv-A Extraction

[waterdragon]

let us know if you ever have success with that. your point about the co2 leads me to speculate that this should be an outdoor thing.

[John_Barleycorn]

Originally posted by theobromos:

The dry salt may be more stable but imine formation occurs with salts of amines in solution as well as freebase, doesn't it?

I hadn't heard of that one, and would be interested in knowing more. As I see it, amine -> imine is an oxidation, right? Something has to grab a H+ away from the methyl group in order to create a double bond. Possible basic candidates include free base alkaloids, water, and organic anions like acetates. Assuming there is no free base present, I would have thought the other routes would be thermodynamically unfavourable and would have to involve some serious catalysis.

I have heard that highly acid environments promote the dimerisation of methcathinone, and so maybe that is an argument for keeping the pH around 5 in the case of cathinone extraction.

[theobromos]

I can't get to a library and check on the formation of imines but in this case the oxidation comes from the ketone group of the other cathinone molecule that is forming the dimer.