I'm not sure, but I've had good yields with an A/B by leaving the bark to soak for a couple of days, but I also used a very low pH Hcl mix, which I don't like to do anymore.
A/B's generally give a cleaner product anyway.
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Macre wrote:
Also, how do find iso's performance when used for recrystallization?/quote]
[quote=soulfood]I haven't used it myself. I imagine it's better than acetone, but not as good as heptane.
Isopropanol is not good for recrystallisation, the spice is extremely soluble in it (more so in acetone though) so yes, naphtha or hexane is the way to go! Need to calculate between salts and freebases? Click here! Need to calculate freebase or salt percentage at a given pH? Click here!
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Macre wrote:
Also, how do find iso's performance when used for recrystallization?
soulfood wrote:I haven't used it myself. I imagine it's better than acetone, but not as good as heptane. Isopropanol is not good for recrystallisation, the spice is extremely soluble in it (more so in acetone though) so yes, naphtha or hexane is the way to go! Need to calculate between salts and freebases? Click here! Need to calculate freebase or salt percentage at a given pH? Click here!
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Surely if the ISO is left to evap at room temperature it will do so slowly and you get good crystals though?
That's what I thought was meant by recrystalisation, as opposed to freeze precipitation.
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soulfood wrote:Surely if the ISO is left to evap at room temperature it will do so slowly and you get good crystals though?
more like a supersaturated sludge. crystallization is performed in a solvent in which the solute is marginally soluble in when hot, and completely insoluble when cold. "Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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q21q21 wrote:
It can work with an extraction but also to purify impure spice
how do you know it's pure? have you done a melting point test? (the most elementary way to test for purity) "Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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benzyme wrote:soulfood wrote:Surely if the ISO is left to evap at room temperature it will do so slowly and you get good crystals though?
more like a supersaturated sludge. crystallization is performed in a solvent in which the solute is marginally soluble in when hot, and completely insoluble when cold. Ah, I get ya. I have much to learn 
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Thank you all for your advice. If I add a recrystallisation step to my extraction I'll count out Iso. I'll probably stick to naphtha (following satisfactory results from an evap test of course). Peace and Thanks, Macre. All things stated within this website by myself are expressly intended for entertainment purposes only.
All people in general, and users of this site are encouraged by myself, other members, and DMT-Nexus, to know and abide by the laws of the jurisdiction in which they are situated.
I, other members, and DMT-Nexus, do not condone or encourage the use, supply, or production of illegal drugs or controlled substances in any way whatsoever.
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After reading through this thread I have to say this is not a new tek. It's a STB with an A/B cleanup. One can go back and forth from A/B/A/B/A/B over and over and over again, with loss of yield each time you flip solvents. I personally think a solid A/B with a defat in the acidic stage will outperform this tek; I see nothing positive this tek has that an A/B tek doesn't. No offense to the OP. I'm not saying the tek is bad, only that it is not original. I think this tek IS better than a STB tek, but I'm prejudice against STBs. Also, IPA, in my experience is horrible at dissolving spice. I get more of a colloidal when I try and dissolve spice in warm IPA. I didn't get it boiling hot, just warm, so maybe at a higher temp DMT will dissolve in it. The Spice extends life
The Spice expands consciousness
The Spice is vital for space travel
___________________________________________________________________________________________________
Never underestimate the power of STUFF!
I am certifiably insane, as such all posts written by me should be regarded as utter nonsense or attempts to get attention.
I don't know SWIM and personally don't trust him at all. If SWIM is posting, most likely I will not respond...as I said, I don't trust the guy. YOU I trust, but never SWIM.
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I'm going to use this tek in my second extraction, for the sake of experimentation. Although my first extraction will be an A/B. Although I've never performed an extraction, I've always felt more steered towards and A/B than a STB. Apart from the fact that I hear alot about an A/B giving a purer product (I'm all about quality), it just feels right also. This tek is the first STB type that I've liked the look of, so I will try it for the sake of experimentation. Peace, Macre. All things stated within this website by myself are expressly intended for entertainment purposes only.
All people in general, and users of this site are encouraged by myself, other members, and DMT-Nexus, to know and abide by the laws of the jurisdiction in which they are situated.
I, other members, and DMT-Nexus, do not condone or encourage the use, supply, or production of illegal drugs or controlled substances in any way whatsoever.
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