• CD Moderators: nepalnt21
  • Cannabis Discussion Welcome Guest
    Posting Rules Bluelight Rules

Isolating CBD?

clamjuice

clamjuice

Bluelighter
Joined
May 10, 2004
Messages
1,475
Location
Canada
First off i will say i am not a chemist. So i seek the advice of someone who maybe has a better knowledge of these things.

I am a medicinal user and have been searching for the highest CBD and lowest THC strains possible. Pretty much every club that ive been to, where i live at least, dont even really carry high cbd strains nor do they even test so its really a guess. And considering a large percentage of med users arent really using for medicine makes this difficult. I would really like to get my hands on something for medicinal use without becoming high. Maybe some can work high, but i cant, and this is just not good.

My question is this: is there any feasible way to make some sort of high CBD extract? Im assuming almost all solvents available to the average person would blanket all the cannabinoids. Anyone with advanced working knowledge of chemistry know if one could refine an extract further to seperate the THC? I know this is probably crazy and unrealistic and would require a lab, but i am a bit curious. Even if just to boos the CBD to THC ratio. Obviously start with a high CBD strain and go from there. But majority of the high cbd strains on the market still have a good amount of thc.
 
clamjuice said:
First off i will say i am not a chemist. So i seek the advice of someone who maybe has a better knowledge of these things.

I am a medicinal user and have been searching for the highest CBD and lowest THC strains possible. Pretty much every club that ive been to, where i live at least, dont even really carry high cbd strains nor do they even test so its really a guess. And considering a large percentage of med users arent really using for medicine makes this difficult. I would really like to get my hands on something for medicinal use without becoming high. Maybe some can work high, but i cant, and this is just not good.

My question is this: is there any feasible way to make some sort of high CBD extract? Im assuming almost all solvents available to the average person would blanket all the cannabinoids. Anyone with advanced working knowledge of chemistry know if one could refine an extract further to seperate the THC? I know this is probably crazy and unrealistic and would require a lab, but i am a bit curious. Even if just to boos the CBD to THC ratio. Obviously start with a high CBD strain and go from there. But majority of the high cbd strains on the market still have a good amount of thc.
Click to expand...

Dude, it's easily done home. Get an accurate vaporizer and run your weed through it at a temperature setting that boils THC but isn't enough to boil CBD, do this preferably with a high CBD strain to begin with. Discard the vapor or gift it to a friend. Do this so many times that you have enough THC starved, CBD rich plant material for an extraction and extract with something that dissolves CBD. I guess you could just smoke those leftovers from the vaporizer just like that, but they're not really enjoyable and there's still a rather low percentage of CBD in there (unless you had a really high CBD strain), you just vaporized the THC out of it.

It's not economic or efficient if you think about it though, if weed has 19% THC and 1% CBD you would have to buy almost 20 grams of weed to get enough CBD as there is THC in 1 gram of weed, so best thing you can do is find a high CBD strain and work with it. Or get a prescription for Bediol© I hear it has ~7% CBD ~6% THC or so.
 
clamjuice said:
First off i will say i am not a chemist. So i seek the advice of someone who maybe has a better knowledge of these things.

I am a medicinal user and have been searching for the highest CBD and lowest THC strains possible. Pretty much every club that ive been to, where i live at least, dont even really carry high cbd strains nor do they even test so its really a guess. And considering a large percentage of med users arent really using for medicine makes this difficult. I would really like to get my hands on something for medicinal use without becoming high. Maybe some can work high, but i cant, and this is just not good.

My question is this: is there any feasible way to make some sort of high CBD extract? Im assuming almost all solvents available to the average person would blanket all the cannabinoids. Anyone with advanced working knowledge of chemistry know if one could refine an extract further to seperate the THC? I know this is probably crazy and unrealistic and would require a lab, but i am a bit curious. Even if just to boos the CBD to THC ratio. Obviously start with a high CBD strain and go from there. But majority of the high cbd strains on the market still have a good amount of thc.
Click to expand...

Yes, there are a few ways to go about it. I make a transdermal CBD medicine that works great for pain and other ailments. I would be glad to post a thread how I make it in the future. The biggest step is for you to grow a High CBD strain with near zero thc. With out that it is not worth your time. There are a number of strains out there that fit that description. The most reliable seed bank stocks all sorts of cbd strains from various seed companies. I'm not sure if we can post links so I won't for now. But, if we can i will gladly do that. or pm me.

Also use google, it's your friend.... Lot's and lot's of info on cbd and extractions on various weed based sites.
 
FnX said:
Dude, it's easily done home. Get an accurate vaporizer and run your weed through it at a temperature setting that boils THC but isn't enough to boil CBD, do this preferably with a high CBD strain to begin with. Discard the vapor or gift it to a friend. Do this so many times that you have enough THC starved, CBD rich plant material for an extraction and extract with something that dissolves CBD. I guess you could just smoke those leftovers from the vaporizer just like that, but they're not really enjoyable and there's still a rather low percentage of CBD in there (unless you had a really high CBD strain), you just vaporized the THC out of it.

It's not economic or efficient if you think about it though, if weed has 19% THC and 1% CBD you would have to buy almost 20 grams of weed to get enough CBD as there is THC in 1 gram of weed, so best thing you can do is find a high CBD strain and work with it. Or get a prescription for Bediol© I hear it has ~7% CBD ~6% THC or so.
Click to expand...

Nancy Sajben, MD, has shared a note from a patient about a CBD-rich strain purchased at Harborside Health Center (after he couldn’t find any CBD-rich Cannabis in Southern California).
The patient wrote: “Incredible Romulan, with a little vaping in the oven to remove THC, proved excellent for my chronic insomnia when made into a tincture.”
Dr. Sajben wanted to know whether heating Cannabis would indeed remove THC.
Project CBD explains: “Just a few comments on the concept of increasing CBD over THC —I am afraid that this is not rational. Firstly, you can’t create CBD when it’s not there to begin with. There are a lot of crazy misconceptions floating around along the lines of raw Cannabis has more CBD; that heating turns THC into CBD; or that you can differentially favor one over the other. None of these are true. The amount of CBD in a given chemotype is genetically determined, period. Generally speaking, drug strains of Cannabis available in North America rarely have any significant amount of CBD.
“THC has a boiling point of 157 Celsius, with CBD listed as 160-180 Celsius. However, both begin to sublimate off at even lower temperatures, and commercially available vaporizers, even the Volcano, do not heat evenly enough to allow fractionation of one component over another. What your patient is doing is wasting some cannabinoids and terpenoids by preheating. To get all of them out requires more prolonged heating, or a higher temperature. When the latter is done, it favors higher molecular weight sesquiterpenoids, many of which are sedating. That would account for the hypnotic effect along with whatever residual THC is left. Contrary to popular belief, CBD is actually alerting, except at exceptionally high doses.

Thats an excerpt from the site project CDB. Im looking for something a little more precise than that.
 
Livinginthealps said:
Yes, there are a few ways to go about it. I make a transdermal CBD medicine that works great for pain and other ailments. I would be glad to post a thread how I make it in the future. The biggest step is for you to grow a High CBD strain with near zero thc. With out that it is not worth your time. There are a number of strains out there that fit that description. The most reliable seed bank stocks all sorts of cbd strains from various seed companies. I'm not sure if we can post links so I won't for now. But, if we can i will gladly do that. or pm me.

Also use google, it's your friend.... Lot's and lot's of info on cbd and extractions on various weed based sites.
Click to expand...

I can get a hold of some 1:1 strains through a club i have located. Would prefer somethings with a higher cdb ratio. I have found some info on extractions, but not too much on isolates specifically. I suppose that is because there is no point isolating from a high thc strain. Does Butane extract CBD?? or are there certain solvesnts that would extract cbd over thc?
 
clamjuice said:
Nancy Sajben, MD, has shared a note from a patient about a CBD-rich strain purchased at Harborside Health Center (after he couldn’t find any CBD-rich Cannabis in Southern California).
The patient wrote: “Incredible Romulan, with a little vaping in the oven to remove THC, proved excellent for my chronic insomnia when made into a tincture.”
Dr. Sajben wanted to know whether heating Cannabis would indeed remove THC.
Project CBD explains: “Just a few comments on the concept of increasing CBD over THC —I am afraid that this is not rational. Firstly, you can’t create CBD when it’s not there to begin with. There are a lot of crazy misconceptions floating around along the lines of raw Cannabis has more CBD; that heating turns THC into CBD; or that you can differentially favor one over the other. None of these are true. The amount of CBD in a given chemotype is genetically determined, period. Generally speaking, drug strains of Cannabis available in North America rarely have any significant amount of CBD.
“THC has a boiling point of 157 Celsius, with CBD listed as 160-180 Celsius. However, both begin to sublimate off at even lower temperatures, and commercially available vaporizers, even the Volcano, do not heat evenly enough to allow fractionation of one component over another. What your patient is doing is wasting some cannabinoids and terpenoids by preheating. To get all of them out requires more prolonged heating, or a higher temperature. When the latter is done, it favors higher molecular weight sesquiterpenoids, many of which are sedating. That would account for the hypnotic effect along with whatever residual THC is left. Contrary to popular belief, CBD is actually alerting, except at exceptionally high doses.

Thats an excerpt from the site project CDB. Im looking for something a little more precise than that.
Click to expand...

Hm, well precise is precisely something you need a lab for. The upper part of your quote is irrelevant though, I wasn't suggesting creating CBD or anything just doing something to the plant material which removes THC at a faster rate than CBD, thus leaving you with a higher CBD to THC ratio, although as I said, this isn't economical and you end up wasting good, active cannabinoids. I am aware of the sublimation, but to my understanding just like with boiling points, sublimation rates and temperature requirements vary (sublimation requires external energy).

It could be true though, that the Volcano doesn't heat evenly, but that's a pretty vague statement I think and I don't know if can believe it without something to backup the claim. How does it not heat evenly enough? Temperature of air flow fluctuates? Left side of the base is 10 degrees colder than right side? What are we talking about exactly? Then there's just a bunch of stuff about how CBD doesn't make you tired at low doses. Get an accurate heat-gun + thermometer or some other heating thingy if you don't trust commercially available vaporizers like the volcano.
 
Livinginthealps said:
I'm not sure if we can post links so I won't for now. But, if we can i will gladly do that. or pm me.
Click to expand...


We can post links, just not source links. As long as the website you link to doesn't sell anything and is for informational purposes then you're in the clear, and I'm actually curious about this transdermal CBD medicine. It's not likely that I'll make it myself but I do enjoy learning new things about my favorite herb.
 
FnX said:
Dude, it's easily done home. Get an accurate vaporizer and run your weed through it at a temperature setting that boils THC but isn't enough to boil CBD, do this preferably with a high CBD strain to begin with. Discard the vapor or gift it to a friend. Do this so many times that you have enough THC starved, CBD rich plant material for an extraction and extract with something that dissolves CBD. I guess you could just smoke those leftovers from the vaporizer just like that, but they're not really enjoyable and there's still a rather low percentage of CBD in there
Click to expand...

Cannabinoid Flashpoints:


tetrahydrocannabivarin (THCV)
Flash Point: 137.6 °C (279.68 °F)

delta-8-tetrahydrocannabinol (delta-8-THC)
Flash Point: 144.5 °C (292.10 °F)

delta-9-tetrahydrocannabinol (THC)
Flash Point: 149.3 °C (300.74 °F)

cannabichromene (CBC)
Flash Point: 174.2 °C (345.56 °F)

cannabidiol (CBD)
Flash Point: 206.3 °C (403.34 °F)

cannabigerol (CBG)
Flash Point: 207.2 °C (404.96 °F)

cannabinol (CBN)
Flash Point: 212.7 °C (414.86 °F)

------------------------------------------

I would like to know how to truly Isolate CBD as well. CBN causes grogginess many of us attribute to a normal state of being when intoxicated through combustion of Cannabis, but I would like to not feel this grogginess while still utilizing the natural attributes to the cannabanoid CBD. As I am also not a chemist, I would be interested in how you would further process the cannabis to purge every other cannabanoid out except CBD. As CBN has a higher flash point, the "easy" method of "isolating" cbd as described, does not allow for the purging of CBN. Any thoughts? :?
 
Lets be clear, unless you have a high CBD strain (either mostly CBD or 1:1 THC:CBD), the amount of CBD present will be very small. There is one particular strain called Charlotte's Web, named after a young girl suffering from a deadly illness that causes life threatening seizures who made an almost complete recovery using tinctures made with it, which has negligible amounts of THC but with a whopping 17% CBD. 17% CBD is the highest I've ever heard of. Unfortunately it's a clone-only strain so unless you're living in the US in somewhere like California, it will be difficult to obtain.

 
Artificial Emotion said:
Lets be clear, unless you have a high CBD strain (either mostly CBD or 1:1 THC:CBD), the amount of CBD present will be very small. There is one particular strain called Charlotte's Web, named after a young girl suffering from a deadly illness that causes life threatening seizures who made an almost complete recovery using tinctures made with it, which has negligible amounts of THC but with a whopping 17% CBD. 17% CBD is the highest I've ever heard of. Unfortunately it's a clone-only strain so unless you're living in the US in somewhere like California, it will be difficult to
Click to expand...

I have the strain R4 that I would be working with. It has lab reported levels of up to 20% CBD & only 1% or less thc. This is the cbd US Cannabis cup winner this year. I realize what you were saying though is in fact they true.
 
You must log in or register to reply here.
Top