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Extraction question , please need help !

Migrated topic.
looks normal cyberdream.
Personally I like keeping my naphtha in the mixing jar for a lot longer than 1 hour, but maybe that's cause I don't like to hasten things. I usually do 12-24 hour pulls, shaking/rolling my jar whenever I pass. Not sure if stirring will do. Now it looks like you have quite a large volume of naphtha so it could be that it is not saturated enough to freeze precipitate anything. If after 24 hours in the freezer you get nothing you can do a few things:

1) evaporate some of it and freeze again (usually ppl wait till the naphtha starts clouding when you blow over it - that's when you know it's super saturated)
2) evaporate all of it
3) split it up and try to pull with each half again this time for longer and with more agitation to get it saturated enough.

hopefully though you won't have this problem.

anyway, good luck.

@ ewok - I'm sure he meant spiritual profit :D
 
Yep, i agree with the try of freezing but disagree with the 24h rule. When someone did his last extraction, he did a lot of pulls with different sdolvents (by the way, n-hexane gives the pure white crystalls, never tried heptane ;) ). He placed them in the freezer (-20°C) and after 24h there were only very tiny chrystalls, not worth to harvest them. So he placed them back into the freezer for ... mh lets say a week, and tadaa... even with large excess of solvent, chrystalls, which are really heavy in terms of weight formed. The more solvent is there, the longer the precitipation takes, but the purer the product... as impurities will usually remain in the solvent....

Wait for couple of days and you will see chrystall formation (most likely)...
And if not, yeah you can evap off some solvent. The guy I know uses cold airflof, works great, works that good that when he evaps completely, and adds a little warm n-hexane ... the chrystalls even percitipate at room temperature.

And one last thing... I think that soaks with solvent for more than 1 h are more then enough. The solubility of DMT in the used solvent isn't that great, so that basically after 5-10 minutes of stirring (yeah, the guy i knopw uses a magnetic stirrer) saturates the solvent... A littel temperature in this step helps even more, when you melt your product the solvents even better soak out the DMT ;)

enjoy!
 
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