Keep censoring i ll keep posting elsewhere cannabis heads love abuse of power and censorship im sure theyll love futures site for this 
. Id like an answer to your abuse of power instead of continously hiding it
Its NOT censoring as your BS is off topic so you need to go the other thread if you wanna argue. You should know how this place works or spend some time reading and less time being a jack off. If thread gets derailed a mod splits the topics so this is not personal. Now stop derailing this thread please.
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Let me clarify just a bit:
“Crystallization enhancer” concept…where very low ratios
Of mole fraction “amine” (or other?) compound accelerate crystalization dynamics.
As opposed to “salt formation” or “h-bonded complex formation”
Where there is a specific stoichiometry to the end product.
The use of the term ‘salting out” generally carries connotations
And Duke’s use of quotation marks is correctly noted.
Photon Noir has commented and added nuance to such interpretations.
“Medusa-Problem” is just a wake up call for the 4200 Butane
Extractors in this industry. THCA “solution chemistry” is “terra incognitio” …there is so much more to learn.
There is some great research and experimental work going on here by a group-think process…cannabinoic acid chemistry…terp soups, solvent solutions and crystalline forms and salts…
WTF?..…
Water is 55M keep that in mind. At 20C it is 1% in pentane.
10 gm/L. “About 0.5” M H2O……keep thinking !
WTF is the pH. How about ground zero.
Google salicylic acid: 50 million hits…if one in ten thousand of those are chemistry papers…you have a lot of reading to do.
Now consider an equal volume of work with it’s diphenol cognate resorcinol.
With regards to the “amine contaminate” problem:
Do we mean R-NH2 or R-NH3+?
If R-NH2. Why not MeOH ? Or H-O-H….is that what is “trending here? …shall we keep our eye on the ball?
Applause for Duke’s contribution.
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Retracted
Could we add something to the collection pot before distilling the gas that would cause the unwanted to salt out and stay in the collection pot?
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You can do that prior to the still pot
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As an analytical chemist I don’t understand this comment at all. Either the peak is on the chromatogram or it isn’t. You can set your software to ignore reporting the calculated peak area under some value, but you’d still see the peak.
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which is why, by default, most labs won’t attach said chromatogram. one also injects only enough analyte to HIT your LOQ. any more would be trying too hard.
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True, this would not be the absolute limit of quantitation for the method, gc fid can probably go down to ~100ppm before quantities are not reproducible. A better term for it would be Practical Quantitation Limit (PQL), as in a quantitation limit relative to the safety threshold- PQL at 50% of state’s safety threshold. Which is common practice in impurities screening in cannabis and pharma.
But if you ask the lab and say it’s for Rnd and you want trace level results, they should be able to quantify much lower.
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As far as I know, we have never sold any Cortland gas. I know for sure that the gas @MWCanna is referring to was not from Cortland.
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phuck that
Does any of these observations seem remotely familiar?
THCA is “cognate derivative” of Salicylic Acid.
???CHALKING PROCESS???
Publication Date:June 1, 2021
https://doi.org/10.1021/acs.cgd.1c00399
We report a ripening mechanism in crystallization of an organic compound that is observable above 1 μm and is different from Ostwald ripening. Salicylic acid crystallized in methanol and water in the presence of simulated structurally similar impurities resulted in impurity entrapment via the formation of solid solutions. Impurities were retained in the solids to a higher degree in the early part of the crystallization and decreased rapidly toward the end. This uneven impurity entrapment resulted in impurity gradients in individual crystals, which were detected and confirmed by Raman imaging. The impurity entrapment impacted the physical properties of salicylic acid, including its solubility and melting properties. An intra-particle thermodynamic driving force was thus found to exist during the crystallization, which caused selective dissolution of the dirtier cores of the crystal and recrystallization on the cleaner edges. These concomitant but opposing mass transfer processes during the crystallization were responsible for the formation of hollow crystals of salicylic acid. The ripening phenomenon is demonstrated experimentally in the beginning and end of an isothermal anti-solvent crystallization as well as during an agitated filter dryer operation.
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Hollow!!
So @Kingofthekush420 CAN has the amethysts he wants?!?
CBD quinone seems an awful lot like a “structurally similar impurity”…
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Brings the entire “cannabinoic acid” repertoire into “concert.”
But I am wondering why Pub Chem lists salicylic acid-methanol
As a compound or complex. Perhaps Photon will think about this.
“solid solutions”…when/where will all this end…?
WTFamines…and Willbilly “Duhs”…are we gaining knowledge
In the sense that we now know we will never understand?
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Acetylate that and watch it go pink
There’s definitely different colors based on how oxidized the cannabinoids are.
I love weed, its so very simple yet infinitely intriguing, far out maan!
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Considering how many people perform MeOH winterization I’m also surprised with the LOQs here. I believe USP 467 threshold is only 300ppm and we validate our labs’ methods to 20% of action level (so 60 ppm). We also found GCMS to be necessary to reach appropriate sensitivity and also cut down on false positives for certain analytes (for instance there is a heptane isomer that coelutes with benzene on most GC methods and requires separation via MRM).
As far as removing MeOH from butane, simple LLE ought to work pretty well. Just going to take a bunch of drying afterwards. I’d say just fill a tank with a dip tube with water, pressurize to get the BP of the tane above freezing, inject liquid tane through dip tube and recover the vapor from the headspace. Assuming MeOH that is codistilling is low concentration (<0.1%) it ought to knock the concentration down a couple orders of magnitude. You could even add any gas phase adsorption to the recovery/dry with molseive at the same time.
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If you are worried about amines as well why not acidify water, protonate the amine to R-NH3…and remove everything in a single step…?
2 cent idea if you’re designing a scrubber.
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Wrong thread?
I’m starting to think that the really bad fast crash certain people are experiencing is caused by the trace amount of methanol mixing with water in the solvent creating a strong anti solvent effect . Depending on solvent tank temperature there could be trace amounts of water mixed with methanol and this is preventing it from freezing like it normally would if it was just butane . All it takes is such a small amount of water and the thca will fast crash . We all know this from back in the shatter days having slabs nucleate from small amounts of moisture . I have also seen people mist freshly poured Pyrex with water and have dry sugar done in 4 hours from pour . This would also explain why some people replace with fresh solvent and it temporarily fixes the issue . I think this is the cause of the rapid crash in the collection pot and when all the thca just drops out within 15-20 mins of pouring .
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