SSU, thanks for your input. I'm also one of the newcomers trying to wrap his head around the extraction process, may I ask you some questions?
You said:
Quote:
Toluene, naphtha, heptane, xylene, DCM (dichloromethane) and limonene are all nonpolar solvents for dissolving DMT and other alkaloids from plant material.
Then you said:
Quote:
Salt form DMT doesn't dissolve in nonpolar solvents -- it dissolves in polar solvents like water.
Which made me a bit confused.
I will try to summarize the process of an A/B extraction, would you please check whether this is alright?
If I understand correctly, MHRB contains the salt form of DMT. If one pours a nonpolar solvent (like naphtha) onto the bark, nothing happens, because DMT in its salt form doesn't dissolve in nonpolar solvents. If one puts the bark into water, on the other hand, then the DMT salt will dissolve in the water, right? But this doesn't happen automatically, because the DMT is "locked up" in the bark (inside the cells perhaps?). One must find a way to break those cell walls, so that the DMT can come out into the water. And that's the reason for the "acid bath" I suppose: one puts the bark into water+acid, the acid breaks the cell walls, then the DMT salt comes out and gets dissolved in the water.
When this is done, one puts the base (lye, pickling lime, whatever) into the water/acid/DMT salt mix, which causes a rise in the pH level of the mix (the more base, the bigger the pH). When the pH reaches around 9, the DMT salt gets converted into DMT freebase.
After this happens, one puts the non-polar solvent (like naphtha) into the mix and the DMT freebase "moves from the water layer into the nonpolar solvent layer". This is the first point which I cannot really understand. Not that it happens, but WHY it happens? What force makes the DMT "move" from the water solution to the naphtha? Do I have to stir the solution for this to happen?
Anyways, let's say it happens. Then the solvent - which now contains the DMT freebase and forms a well separated layer from the water+acid+base mix - is somehow removed from the mixing bowl, poured into a separate dish and put into the freezer for "freeze precipitation". This takes 24-48 hours, after which DMT freebase crystals will show up in the solvent. Then the fridge is opened, the solvent is poured through a filter (coffee filter?) back into its container, then the coffee filter is put to a dry place, the DMT crystals are dried (excess solvent on them is evaporated) and then scraped off with a razor blade or something into a vial.
The teks say that after this the recycled solvent should be mixed back into the water+acid+base solution and another "pull" should be made (mix, remove solvent, put into freezer for precip). I can't really understand why this second pull is necessary. Didn't the first pull take out all the DMT? Supposedly not... But why? And how do I know that I'm ready (don't have to make any more pulls)?