THC interaction with solvents

Teknotk

New Member
My real question is will ethanol vapor interact with thc in a similar way to how butane will react during a BHO extraction? Particularly if you vaporized it and used pressure to push it through an extraction chamber with collection post condenser. Asking out of pure curiosity.
 

Teknotk

New Member
Blasted BHO is not done in liquid phase. RSO is no doubt, but most home-doers wont have refined butane like that
 

Teknotk

New Member
Unless you have butane under a vacuum it has a boiling point (off the top of my head) right around 0f so the moment it leaves the pressure of the container and interacts with environmental pressure and temperature it is in a gaseous state. As far as my understanding goes, cannabinoids react in the presence of the hydrocarbons and isolate. The reason it comes out a liquid is due to its bonding. Butane molecules that do not bind will escape the bottom of the blast chamber. Granted the chamber will cool significantly during the blasting, it most likely wouldnt reach a stable enough temperature to keep the butane in liquid phase. I believe you're thinking of a closed system where butane is originally segregated and supercooled in a condensor to force a liquid phase which is then pumped through the material, but most places with that setup would use CO2
 

Fadedawg

Well-Known Member
A fine theory but not true. n-Butane boils at around 31F, but it has to warm up to that temperature and releasing from the pressure of the can actually cools it.

The way BHO works, is that you extract with the LPG a liquid and then remove it as a vapor, leaving behind the concentrates.
 

Teknotk

New Member
You wouldnt happen to have any source reading on the subject. I'm getting the feeling my knowledge has been a bit polluted
 

Fadedawg

Well-Known Member
Nothing to suggest beyond a physics book, but consider what happens with open blasting. Liquid from a pressurized can is squirted into the top of the column, and liquid runs out the bottom. The same thing happens in a closed loop system.

The butane hasn't warmed up enough to be liquid at the pressure that builds up in the CLS, even starting with a vacuum in the CLS, and is chilled by releasing the pressure on it as it is injected. Enough gas vaporizes to build enough pressure inside the CLS to keep the balance liquid and its temperature.
 

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Fadedawg

Well-Known Member
To your original question, you can extract with ethanol by passing it through a column of material, just like the typical BHO process, or soak it. Either way you need to do it at subzero temperatures.

I personally use subzero (<-50C) or the QWET (-18C/0F) process for ethanol extraction. For small batches you can achieve -50C by simply dropping dry ice into the EtOH: https://web.archive.org/web/20160303064858/https://skunkpharmresearch.com/qwet-extraction/
 

Fadedawg

Well-Known Member
By the same token, I personally use <-30C LPG temperature when extracting BHO, to minimize extraction of molecules heavier than C-22. I also use a 70/30 LPG mixture.
 

Teknotk

New Member
Gracci senor. Do you play around with fractioning and re-introducing terpenes? I've been messing with blueberry terpenes and I've been having very delectable results.

Why do you personally use LP? I've used Naptha, 95% ethanol, 100% ethanol ,99% isopropyl and Butane but I find that drying my everclear to 200proof with molecular sieves has given me the best results. Granted that the chlorophyll content can be a little outrageous depending on what product I'm aiming for.
 

Fadedawg

Well-Known Member
Gracci senor. Do you play around with fractioning and re-introducing terpenes? I've been messing with blueberry terpenes and I've been having very delectable results.

Why do you personally use LP? I've used Naptha, 95% ethanol, 100% ethanol ,99% isopropyl and Butane but I find that drying my everclear to 200proof with molecular sieves has given me the best results. Granted that the chlorophyll content can be a little outrageous depending on what product I'm aiming for.
Yes we've done short path and played around with the various terpenes. Which ones are you introducing as Blueberry?

I personally use both LPG and EtOH, and have tried a number of others, including SCFE CO2. When I use LPG I do so to produce a shatter or isolate that is high in terpenes. It is easer to maintain the terpenes while purging low boiling point LPG than some of the higher boiling point solvents like EtOH.
 

JayBio420

Well-Known Member
You wouldnt happen to have any source reading on the subject. I'm getting the feeling my knowledge has been a bit polluted
The butane finishes as a liquid, and starts as a liquid, because we keep our material, tubes and butane at sub-zero temps. You must have something mixed up, happens.
 

Teknotk

New Member
Yes we've done short path and played around with the various terpenes. Which ones are you introducing as Blueberry?

I personally use both LPG and EtOH, and have tried a number of others, including SCFE CO2. When I use LPG I do so to produce a shatter or isolate that is high in terpenes. It is easer to maintain the terpenes while purging low boiling point LPG than some of the higher boiling point solvents like EtOH.
For the blueberry I've actually just been using some PG and blueberry terpenes from my buddy who owns a vape shop. What I've been doing is using that to liquidize my shatter and put it into those NJOY pods for discrete use. Works freakishly well, totally delicious.

Otherwise I would just use a short path to isolate all the goodies.
 
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