grollum said:
In my first and second attempt I was stiring before every pull. And maybe not gentle enough. So will only stir once at the beginning and more gentle.
To clarify: I very gently stir every pull for 30 seconds then let the solvent sit for 2.5-3 minutes, then decant. But even that gentle stir is probably unnecessary since the cactus is so well broken up if all the pulling is done within 30 minutes. After 30-40 minutes the cactus begins to stick together and thus we conjecture it would be slower for the
mescaline to migrate out to the solvent.
Just like hot water pulling goodies out of tea leaves within a few minutes, we don't have to stir the water vigorously. Same with the
mescaline freebase and ethyl acetate. The ethyl acetate seems to be very effective at pulling the
mescaline without physical agitation.
When do you stop? When clear or when the dissolution is not working anymore? I think I should really get a magnetic stirrer.
I've added 5 mg/gram, 15 mg/gram, and 20 mg/gram with different attempts and they all resulted in precipitation within a few minutes of vigorous magenetic stirring. I added the 5, 15, or 20 all at once (nothing incremental). Yields were all basically the same. The only difference is more of the 5 mg/gram xtals stuck to the walls, requiring a warm water wash to get the last of the xtals out of the jar. The 15+ mg/gram xtals pretty much all come out of the jar by knocking them off the sides with the spinning stirring bar then rinsing with ethyl acetate, thus no warm water wash/evaporation step is needed.
I believe the 5 mg/gram xtals are a little fluffier, thus more sticky. The 15/mg and 20mg/gram xtals are smaller and more dense, thus they don't stick to the jar walls as well.
I did a
comparison in Run #3 - Jar (B) versus (D) of 5 mg/gram versus 20 mg/gram and the 20 mg/gram had visibly less precipitate. But after filtering, washing, and evaporating, I found the yields were basically the same. The 5 mg/gram just looks like more when floating around in the jar because it is less dense.
grollum said:
shroombee said:
I conjecture that if water is interfering with xtalization, another way to minimize its influence is to add fresh ethyl acetate to the extract before bombing with citric. It is not necessarily efficient use of the solvent, but for initially testing the hypothesis it may be a direction to consider. For those having difficulty, perhaps split the next run's combined pulls into 2-4 jars and salt them separately, trying different amounts of added fresh ethyl acetate before salting.
Thought about that too. The jars from my second attempt were sitting in the fridge for a day and collected what I think was water at the bottom. So this might be what is going wrong so far for me.
Gentle, fast pulls and bombing with plenty of citric acid appear to be the primary differences between my successes and head-scratchers. Bombing immediately rather than letting the extract sit around may be a secondary difference.