decarb ?'s thcA->thc yes, but thc-> can through decarb??

[weedwillsucceed]

hey there! so i'm a bit stumped. i have a pretty good understanding of decarboxilation, but I'm having a hard time understanding how thc is turning into can through decarb. i thought it occurred through oxidization, and not through heat. is there enough oxidization during the decarb process to convert thc to cbn if the right heating and time is used, or are you converting the already created cbna into can and thats all that you will be able to achieve? if this is a repost please let me know and ill keep searching. newbie tryna work the site, hopefully this thread makes sense

i guess to simplify my question in case I'm reposting a common ?, if through heat and time THCa is converted to THC, what will that thc convert to if left under continued heat?

 

[weedwillsucceed]

im terribly sorry, my computer seemed to have respelled CBN! I'm asking about thc conversion to CBN through decarb.

 

[weedwillsucceed]

according to this graph i found from badkitty's awesome thread on here, thc only converts to CBN through degradation, but at skunkpharm research they talk about thc to cbn conversion through decarb,
"When we heat cannabis to convert the THCA and CBDA into THC and CBD, we are also converting THC to CBN at a faster rate. At about 70% decarboxylation, we actually start converting THC to CBN at a faster rate than we are converting THCA to THC, so as you can see by the following graph, after about 70% decarboxylation, the levels of THC actually start to fall sharply.
That of course means that the CBN also begins to rise and the medication is becoming more sedative."
http://skunkpharmresearch.com/decarboxylation/

 

[G.O. Joe]

Temperature over 150° or a prolonged time in air below that is needed to produce CBN. The graph is based on a graph from an article I posted a link to here - the whole article, not the graph, for this very reason. But the graph was not only promptly cut out from the file, it was converted to a different form, which then went viral. In the article, the proper context is directly below the graph: This illustrates the low velocity of the decarboxylation. Similar results were obtained for CBD. The decrease in the amount of cannabinoids observed at 122 and 145°C is caused by the evaporation, which was confirmed by TLC analysis of the evolved gases.

H. Perrotin-Brunel et al. (Journal of Molecular Structure 987 (2011) 67–73) decarboxylated 400 mg. portions of 18% THCA/3.6% water cannabis in vacuo at 90-140°, and didn't mention finding anything but THC and THCA by HPLC. The highest yield was given as 110 minutes at 110°.

 

[weedwillsucceed]

hey much thanks for the response! i have read and will re-read the H. Perrotin-Brunel
study to get more clarification, and then i will be tackling the thread "Decarboxylation and medical properties???" by gray wolf that i saw you posted on. i have more questions but will save them tell i catch up!
the graph sources itself to the journal of chromatography 1990,(the one skunkpharms seems to be going off of) which i can't find the graph in journal for so far. just for my own clarification, is this the one your saying is being talked about and was taken from (and converted) from the journal of molecular structure?? or are we talking about the chart i posted from bad kitty?? thanks again Mr.Joe!

 

[G.O. Joe]

Veress was copied and linked from here - you're only 5 years late. The publisher's version is low-res but is now available from multiple sites. Later I did put together a collection of graphs and I think the blame I was giving jump117 is actually mine - he got it from here - I'm the one who cut it out.

 

[weedwillsucceed]

late to the party as usual more reading to be done!

 

[NW Wheeze]

G.O. Joe

I am interested in reading the linked chromatography articles in your 2009 post linked above. It keeps taking me to a funky download site. I am guessing the link is outdated? Where else could I find this? Any help would be appreciated, I am not really a computer person. Using this website is about the extent of my internet use for the day.

 

[G.O. Joe]

ifile has been dead for a long time. The publisher's copies are at the more recent sites I linked to - enter the first part of the titles, or the authors. The Scientific articles search option has to be checked at libgen - the search result there will give a DOI number which is also the download link. There's also another article, that shows the CBN - https://www.icmag.com/ic/showpost.php?p=4280134&postcount=13