Over night crashes. Not the best video quality
Night before
Next morning
This was just another jar I recreated the same steps
2 Likes
now is it not amazing you can extract from plant material in -40 Butane?
3 Likes
Not that anyone is using a 1:1 ratio of solvent to biomass for that trick, but yes
I was going to post this earlierā¦but decided not toā¦
but it is certainly an open questionā¦questionsā¦
What does this mean?
You just extracted at -40 and dissolved your THCA.
Do you mean crash THCA from butane -undefined Terp soup-plus new butane contaminantā¦
It would be nice if just someone would take some of the 99% plus THCA chalk
and call it standard. Then working with the THCA standard, just do a solubility
in n-Butane (mole/lit) chart vs temperature.
How do Terps promote crashing when in the trichome-soup ( in situ) the THCA is
not crystallized? How can it be one small contaminant in ānew Butaneā when you
you are crystallizing out of āterp=soupā.
So once someone does THCA solubility study vs Temp in butane with a known and defined standardā¦you can start to talk about the effects of mole fraction of terpenes
on such solubilityā¦?
Using THCA chalk standard and recrystallizing diamonds from Pentaneā¦
prove to yourself that you can poison this crystallization method by adding
ānew Butaneā. Get the Terps out of the set of variables.
these are just off the cuff thoughts about the ābutane fast crash problemā
bestā¦
3 Likes
I think you explained to me about the centrifuging terps from diamond
processā¦
what would you estimate the weight fraction of terp soup to diamonds
after centrifugationā¦
if terps promote crystallization, is it possible the butane contaminant acts to
enhance this processā¦ie the terp-enhancement?
we are not talking about how this unknown component (singular) effects
pure THCA crystallization from butane or pentaneā¦
it is really hard to even estimate what might be happeningā¦
Extracted at 10:1 solvent: thca
Crystallize in vicinity of 1:1 (depending on temp)
3 Likes
From high mole fraction terp soupā¦
It can not be thought of as butane., pentane, or isoā¦
It is weedo
Trying to think about.?
Use chalk as standard. Get rid of terps.
1 Like
Ive got a few 100lb tanks of good 99% n-butane and a 55gal drum of 99% pentane with 40kgās of thca isolate to play with.
If one were to do so, How would one go about reporting, documenting and making this chart that records the solubility at different temperatures for c4h10 & c5h12
Literally all I do now is saturate 1000g of pentane with 650g of thca(bho), I tried more but it wont go unless I heat the pentane up to 80f, even then I need to mix it for a while to get it into solution
I imagine c4h10 is a little harder to do but at least I have thermal probes in the bottom of my cls tubes(bzb), just afraid that I would have to filter to even be able to see if there is some fines left that didnt dissolve
@moronnabis How would you suggest running such an experiment ?
2 Likes
Stability at several temperature levels, start at one temp slowly add thca to solvent and let solute repeat until thca no longer dissolves take note of solvent ML and diluted thca weight then SLOWLY increase the temperature and repeat the steps(give proper time to fully dissolve thca in solvent, the solution being stable for 2-3hours is a good indication of saturation)
5 Likes
At a defined temp and pressure, with a defined solventā¦
No reason not to wait a few days ā¦for equilibration.
Precise temp control= precise pressure controlā¦in closed container
To prevent evap.
I wrote the OP a little noteā¦on the necessity of defining what exactly
It is heās calling THCA. What is the crystalline substance you have.
Then proceed to the above solution experiments.
There is virtually no data on THCA crystalline multiforms.
Hydrates and co-solvents inclusions.
There is data from XRD on crystalline material ācondensedā out of subcritical-CO2 open blast only. Very little about any crystalline material out of Alkane. Please advise. (Some NMR)
I donāt see any heuristic value of working on unidentified crystal.
HPLC will. Only give you data on aqueous-formic acid methanol solution chemistry.
So what ever crystalline form is defined as the ā defacto THCAā
It will have to be a preparation that others can reproduce.
2 Likes
Try powdering up your BHO/isolate really fine. I have dissolved 100g of BHO in about 30g of pentane (not THCA isolate, mind you).
2 Likes
Processing: IMG_20220531_135155.jpgā¦
Processing: IMG_20220531_135259.jpgā¦
Processing: IMG_20220531_135234.jpgā¦
Am I doing this right? Disolved at a 2:1 ratio, let some evap off, put in freezer and it got thick so I added pentane and let it sit at room temp and this formed within 30 minutes. Hopefully it goes solid.
Edit and re upload those last ones. And when you let it evap, before you put it in the freezer, how much did you let evap? Also, how much did you add back?
1 Like
I dissolved at a 2:1 ratio 450g sugar to 900g pentane and separated them into multiple jars. I let 150g evap out from one jar and added that back in after I pulled it from the freezer because it was thick. Any tips or hints you can give me to make this work? Or am I on the right path? I originally tried leaving the entire mixture in a pyrex at 2:1 with seeds but my seeds just dissolved and nothing happened after several days so I poured into jars. Everything Iāve been doing has been room temp (80Ā°f) other then the freezer portion.
Evap about 300-325, but donāt put it in the freezer. Then let it sit. Obviously dissolve the chunk thatās there.
And yes, what I posted in the other threads needs tweeks. But if you play with it youāll get it.
Was the tray covered and sealed? Pentane should evaporate pretty quick. Especially at that temperature
No I just had parchment paper covering it so dust didnāt get in it
Thatās odd
If ur seeds dissolve this is telling u that u have to much solvent still
8 Likes
Iāll evap some off and see what happens 
1 Like
So I finally started to try this recrystallization in pentane. I have 3 different ones going at the moment. 200g thca : 400g pentane in a BVV miner (started on 6/7/22), 77g thca : 300ml of pentane in a mason jar (started on 6/7/22), & 100g thca : 300ml pentane in a mason jar (started on 3/15/22). I will post pics of each. I warmed each to its boiling point, crushed the thca, dissolved in pentane and then cooled them and seeded each. The BVV miner one I believe still has to much pentane, itās hooked up to a chiller and set to 14c. It has grown some but i think maybe itās to cold and has to much pentane so i brought it back up to 24c to evaporate some off (should it be warmer?). The valve has been cracked maybe 1/4 the whole time. The mason jars are just sitting at room temp. The one that seems to be having the most success is the 100g thca : 300ml pentane jar. I think we evaporated to much pentane off the 77g thca : 300ml pentane one because it started to created a sugar layer torwards the end of last week so we took out the seed that quad tripled in size, added a little more pentate and then re seeded it with a new seed. We took the giant seed that had grew from that one and seeded the 100g thca : 300ml pentane mason jar Friday 6/17/22 and it seems to have had the most success with a lot less time then the others. Is it normal for recrystallization to be occurring on the sides of the jar? Should i break them off the side and bottom or just let them be and watch them grow? It looks like it could be a pain to break up. How do I know when all the thca has crashed out of the solution and its done? How much thca should one loose/get back? I figured there will be some lossā¦ And afterwards do I just purge the stones in the oven under vac to get rid of the excess pentane off the stones? I was going to give it the week and possibly harvest the stones at the end of the week atleast on the one that seems to have the most success if they continue to grow at the rate they have over the weekend. I have read this whole thread multiple times but reading and doing are two different things so I appreciate all the advice/ tips.
4 Likes