R134a hemp and cannabis extraction advice and comments

We rip 100% TERP CONCENTRATE. Happy to show you the elated farmer’s results!
NO additives or suspension chemicals!

where are these results and why does it look like 3-4 different accounts trying to say this is the future yet no residual or heavy metal reports

Show current full panels. Have anyone purchased the machines or just watch them be run at their facility

Is the acetone and stuff a result of the freon? Or is there additional solvents? What do you fellow future4200ers think?

Or even:
“If you’re dumb enough to buy it then we are bold enough to sell it.”

From working under similar ownership I can attest to that level of beurocracy that even sometimes can get in the way of good production. Story of my life. puff puff then passes the blunt

After reading the whole thread I really am curious as to how selective R134a seems to be against THCa such that I could use R134a to maayybee crash out THCa in a liq-liq solvent crash with an alkane (butane or whichever is more non-polar).
Also, using R134a for sweeping off terps before doing a shatter run seems very useful though I hear propane is already used for this purpose as well as warm N2.

According to Wikipedia, one of the metabolites of Isopropanol is Acetone. I’m not versed on what conditions would create such metabolites but seems to me that if you had isoproyl alcohol come in contact with the crude then I would expect that’s where you got the Acetone from…perhaps the methanol too depending on how pure the isopropyl alcohol is that was used.

I hear people use sub critical c02 for terp collecting/terp chasing. Though I also hear you have have your system pretty well dialed in though to get that down.

yeah ive seen a video in a cloosed loop group on fb, though there was no data to prove anything so no way to verify :man_shrugging:

A couple of months late, sorry. So 134a is miscible with lower alcohols, ketones, chlorinated solvents. I’m going to search through my files for something more specific.
Tech sheet: https://www.chemours.com/en-/media/files/propellants/freon-134a-technical-information.pdf

not happening in australia.

you need a refrigeration license to use it here even though it has such a low carbon footprint
and is nearly 0 ozone depletion.

once our government has something it does not give it back.

massive fines for importation too unless already in an air conditioner below a set size

are you working with DEVEX machine? CryoEx 400?

Just going to chime in and say the worst terps I’ve ever had (and I mean the worst) were extracted with R134a. The lab didn’t even bother running them they smelled so bad.

Of course, that could have been an incompetent extractor or piss-poor starting material. But they did in fact smell like piss. This is my only experience with this solvent. I think it’s a shill product intended to profit off of wannabe extractors and/or people who don’t know where to get butane.

My experience is similar. R134a extracted a bunch of extra smells and colors

I’m not worried about color on terpenes, personally, but these definitely were some of the darkest I’ve seen. I think that “water clear” does not represent quality in the slightest. If anything, the pale yellow terpenes with a hint of cloud have been some of the best I’ve had. I know that seems ass-backwards but I think we are all trying to over refine terpenes to be clear to look clean.

These were gold-amber which again some of the best terps I’ve had were darker. I think when we try to pull all of these other impurities like waxes and pigments we are one-by-one also removing more and more groups of aromatic compounds. For quite some time I’ve had a crazy theory that cloudy terps are better because we’re still seeing a lot of the water solubles left behind. At 5% terpenes it’s not going to affect the clarity of the oil in my experience.

R134a definitely had a really nasty grass smell to them. Reminded me of hemp that didn’t fully dry and was left in a tote for a year or 6.

most halogenated solvents pull more than normal alkanes.

there is no reason to thing R134a will be any different.

I would expect if to be much like DCM or chloroform
Chloroform is standard for extracting chlorophyll
http://sci-hub.tw/https://onlinelibrary.wiley.com/doi/10.1111/j.1749-7345.1988.tb01043.x

the benefit of these other halogenated solvents over your aircon gas is that you can easily
reuse them

might have benefit an entrainer in LPG solvent systems

I personally would not use halogenated solvents for human consumption.

I like the idea of using heptane as many here do as its relatively safe if compared
to other non polar solvents.

stay away from hexane it has been known to cause problems in the long term health of drug cooks
who breath it.

to add to that I don’t think pentane is to great for you over time either.

It’s worth mentioning that r134a is a CFC being phased out of many industries by HFCs and newer HFOs because CFCs are OZONE DEPLETING CHEMICALS. So just use other solvents. you want your cannabis to put a whole in your reality, not the ozone.

very good point :slight_smile:

on the use of hexane

you should really be careful what solvents you use

That’s what I was looking to read

It’s very much possible it was extracted using hemp that was left in a tote for a year or six. So my experience with these terpenes is limited. But given the solvent‘a affinity for bitter undesirables I’d say it’s probably not just a coincidence.

Wasn’t this the same solvent that they were trying to get random people to push on Instagram as affiliates? Maybe a different brand but a few years ago I saw a lot of hype from people with zero extraction experience trying to hustle it on those really shady Facebook weed groups hat we’ve all stumbled upon. The ones where you go in it once and get swarmed with friend requests from people named “Johnny Kush Pack” for months on end.

Hey Guys… new member here but I can chime in on the R134a extraction as I run a pretty large R134a extractor for hemp extraction. We’re still doing some R&D on our machine but to clear some things up:

  1. You do have to have an EPA 608 cert to be able to work on the machine
  2. Running decarbed biomass (hemp flower) GREATLY increases your yield
  3. To preserve terps, you can do a double pass. Run the biomass in the extractor to extract terps, then decarb, and re-extract for cannabinoids. The initial terp runs come out pretty hot, had one as high as 29% so we don’t always go after terps.
  4. We control temp & cycle time. Temp is controlled by oil jackets on the vessels (Pressure and temps are related so running higher temperature gives you a higher pressure extraction)
  5. Our recovery tank is under vacuum to remove most of the solvent in the oil and recovers the solvent to transfer back to the solvent tank (closed loop system)
  6. We do get residual solvents left in our oil but we put it in a rotovap to pull them out.
  7. R134a does not have any ODP but it does have a fairly high GWP so the refrigerant industry is starting to phase it out for HFO which has a 99.7% lower GWP so eventually will we transition to that once it is more widely used and cheaper to find.

We make CBD Tinctures, Softgels, and Pain Creams so we don’t have to worry about the high temps of vaporization though we do try to eliminate as much residual solvent as possible as this can affect formulation percentages if the residuals are in high enough concentrations as the residual solvent will off gas during reheating of the oil to mix into final product.

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