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| Forums > Talk About It! > Cannabis Concentrates > Preparation of crystalline THCA | ||
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#131 |
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Join Date: Feb 2008
Posts: 407
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@99.99Thca ..A/B extraction will work but may not be the most efficient. Chromatography is a way to produce THCA in larger amounts then is what is currently being produced. Some companies are selling the high cannabinoid fraction from their closed loop extraction as pure THCA, when it only tests at 80 percent cannabinoids, but of those cannabinoids present, 97% is THCA. This is a great starting point but not pure THCA by any means.
Slow-evaporative recrystallization would be the safest method to use. Follow Pangeas starting point of crystallizing from an underpurged mass of BHO. Clean and use these crystals to then experiment further(more recrystallization in different solvent systems) to obtain a higher purity. Sorry for not posting more detail but there are many trying for this and until I can access the right materials, I dont want to show inferior methods and crystal. When I have enough to produce large crystals I will post further. |
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2 members found this post helpful. |

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#132 |
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Member
Join Date: Aug 2016
Posts: 340
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hey guys im just wondering about the safety of smoking 100% thc? im no doctor but i ask because of 2 reasons, 1) we know how bad it can be to drink ~100% alcohol (but yes i know can't compare apples to oranges), and 2) last week i saw a video by a pro-cannabis & pro-smoker doctor giving a lecture at a uni in Israel. Anyway while she's pro-all-that, she is very concerned about DABBING ... but it wasn't made clear to me in the video if she was talking about how pure it is, or if its the effect of solvent residue, but she said it's the only time she'd ever seen toxicity in a cannabis patient.
Again im not a doctor and please dont be alarmed or anything, and again i dont even know if this is an issue or not, but its better to be AWARE than not, thats all!! so please make of it what you will ![]() I refer to this - https://www.icmag.com/ic/showpost.ph...28&postcount=5 |
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#133 |
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Member
Join Date: Feb 2008
Posts: 407
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A purified chemical shouldnt contain any residue solvent so that's not a worry. The concern would be people ingesting very high doses and getting increased side effects from that
Anecdotally, it appears generally safe at normally consumed doses. For very large doses, I think the jury is still out. As with any novel substance, start small and assess reactions accordingly. She lost me at THCA dissolves in water, she doesn't appear to be fully informed about the subject matter. Her use of the word toxicity is ill advised. You see side effects yes, but toxicity I have yet to see anywhere in any journal or even personal experience. Last edited by weedaholic721; 08-17-2016 at 04:32 PM.. |
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1 members found this post helpful. |
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#134 |
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Got me a stone bad Mana
![]() Join Date: Jul 2013
Location: Southern California
Posts: 2,266
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Smooth, comprehensive presentation on the current state of MMJ, unfortunately Deborah Kadabra doesn't want us dabbing her ass.
Thousands were dabbing on and on and on and on at Chalice California, check the records of the medical tent, no one falling ill as 'Debbie Downer Kadabra' would lead us to expect....... ;-)) She states most cannabis oils are devoid of terpenes, which we know is BS, and then she states the importance of titrating dosage, which we know is best achieved with highly concentrated medicine. A synonym for sanity is being reasonable....
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Link won't open? 1. Click on the link. 2. Click in the address bar, and use backspace to remove the s in https. 3. Click on the 'reload this page' icon, or hit the return key. Best to Worst Canned Butane List https://www.icmag.com/ic/showpost.ph...6&postcount=28 Cannabis Alchemy by D. Gold https://calgarycmmc.com/E-books/E%20B...0D.%20Gold.pdf Hash oil techniques and solvents for non BHO hash oil? https://www.icmag.com/ic/showthread.php?t=338633 Solvents listed as to polarity https://www.icmag.com/ic/showpost.ph...&postcount=162 The Truth Machine by James L. Halperin (free read provided by the author) https://coins.ha.com/information/ttm.s Last edited by SkyHighLer; 08-18-2016 at 04:15 AM.. |
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#135 |
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Senior Member
Join Date: May 2010
Posts: 1,111
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One year anniversary pics.
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9 members found this post helpful. |
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#136 |
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Member
Join Date: Aug 2016
Posts: 340
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WOW! beautiful little THC DIAMONDS
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#137 |
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Member
Join Date: Apr 2015
Posts: 205
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Derby this procedure is somewhat obsolete now, using a kromaton CPC machine is the way forward for prep scale isolates imo
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#138 | ||
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Got me a stone bad Mana
![]() Join Date: Jul 2013
Location: Southern California
Posts: 2,266
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Quote:
Quote:
__________________
Link won't open? 1. Click on the link. 2. Click in the address bar, and use backspace to remove the s in https. 3. Click on the 'reload this page' icon, or hit the return key. Best to Worst Canned Butane List https://www.icmag.com/ic/showpost.ph...6&postcount=28 Cannabis Alchemy by D. Gold https://calgarycmmc.com/E-books/E%20B...0D.%20Gold.pdf Hash oil techniques and solvents for non BHO hash oil? https://www.icmag.com/ic/showthread.php?t=338633 Solvents listed as to polarity https://www.icmag.com/ic/showpost.ph...&postcount=162 The Truth Machine by James L. Halperin (free read provided by the author) https://coins.ha.com/information/ttm.s |
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#139 |
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Member
Join Date: Apr 2015
Posts: 205
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Skyhigh - the thesis by Arno hazekamp titled "cannabis; extracting the medicine"
His paper covers cannabinoid isolation using CPC, proton NMR quantitative analysis, reverse phase hplc analysis, and thc complexing with beta-cyclodextrins |
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3 members found this post helpful. |
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#140 |
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Member
Join Date: Feb 2008
Posts: 407
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2 members found this post helpful. |
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