ReXing THCa in pentane

Both but he was talking about the last comment…heat vs crystal growth

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The real trick is doing those temp swings as fast as you can while riding the super saturation curve and not overshooting it or undershooting it.

The faster you can do it the faster they will grow, as long as there is thca and enough solvent.

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This is what I meant but I couldn’t gather the right words in that big statement I wrote

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What is the current temperature you are keeping them at now

So it’s just in my room which honestly fluctuates from 60-68ish right now in these winter months. To really control this maybe I’ll go pick up a separate oven for pentane jars alone or is that not necessary? I know a heat mat wouldn’t be nearly as controlled.

I’m reading more about this solubility curve (maybe i mean super saturation curve? Not a chemist :rofl: )and I’m curious if it’s generally the same types of curves in terms of growth vs nucleation for temp swings throughout most organic chemistry or do the variables of our solvent and what the actual crystal is made of play a role as well? Like sugar in water won’t be the same curve as THCA in pentane. Which I would assume so because of the different boiling points

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Ya it’s solvent/solute specific. One thing many people overlook or don’t know is how you move through the solubility curve actually determines where the metastable zone in the solubility curve is. The Meta stable zone being a fixed place is not the case which is why unless you have insane pharma level analytics crystallisation is 1 part science 1 part art.

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Maybe a dedicated oven set to desired saturation temp. (Just below bp?) And then cycled on/off throughout the day on a on/off timer to the whole oven? The time off would allow for a cooling cycle if the oven cools quick enough I’d imagine?

Hmmm a refrigerated vacuum chamber (oven)
That sounds cool need to be pressure resistant thou :thinking:

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Oven Refrigerator, like a freeze dryer ?

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Got one for u 10 k or 15k with polyscience ad15

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So update. It’s been about a week since I evaporated about 10% of the pentane off. The larger stones seemed like they were growing it’s hard for me to tell. The smaller crystals formed at the bottom and they seemed to grow slightly but barely. Now I’m wondering if someone could help me out here. My guess is, especially with seeing some growth some of you guys get in days, is that I need to evaporate more pentane to reach a higher level of supersaturation for faster growth. Is this correct?

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Without seeing it I can’t say for sure but probably.

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So there are the larger stones and then you can see all the specs of crystals which have gotten a little bigger in the last week but not by much

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Latest update: so I evaporated off another 15g of pentane just now. It’s cooling. I immediately notice it looks like the swirls are concentrated down at the bottom. So is this a sweet spot for now or is this a sign that it could sugar out?

@Dred_pirate @Dukejohnson @Franklin

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Wait and find out. Worst thing that can happen is you add pentane back and slow you down

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It’s insane the “ah-ha” moment this simple comment just gave me lol… this was like the missing piece to the puzzle my brain needed to put together everything in this thread

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I wish I read that sooner lol

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Hey guys so last thing I want to know… about how much of the THCA can you actually crash out? I notice people saying you never get it all back out, so what is the usual? 80%? 90%? Or are some of you guys able to get 100% of your THCA back out?

U get it all back if u let all the solvent evaporate…then do cold wash w pentane after the warm water quick wash

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Why use water?

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