Magnetic stirrer and ISO?

BluJayz

BluJayz

Well-Known Member
Has anyone used a magnetic stirrer for Cannabis related extracts?

If you're not sure what one is. It's a long magnet that spins under a base and causes a magnetic funnel above it. So If you place a beaker of fluid above it it funnels into itself.
magnetic-stirrer.jpg

I haven't seen one since college and the idea came to me today to use this to speed up the evaporation process of ISO. Since this magnetic funnel exposes new surface area of the liquid to air it should increase the evaporation rate by much.

This should rival a very strong fan blowing directly at it. It would not be able to complete the process just speed up the middle which even with low heat can take upwards of 17 hours.

Ideas, comments, concerns?

Lets talk bongsmiliebongsmiliebongsmilie
 
W

Whatstrain

Well-Known Member

  • with low heat can take upwards of 17 hours.
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Are you using 99%? I have a head shop here that says what they are selling in these bottles are 99% but its actually 70% or lower possibly, that stuff takes a day or so with a fan. When i evap off 1L of 99% its done within 8hours, probably less but i set the fan on it when i sleep.
 
BluJayz

BluJayz

Well-Known Member
Whatstrain said:
Are you using 99%? I have a head shop here that says what they are selling in these bottles are 99% but its actually 70% or lower possibly, that stuff takes a day or so with a fan. When i evap off 1L of 99% its done within 8hours, probably less but i set the fan on it when i sleep.
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99% only for my patients. Its bulk from an electronics depot and individually bottled so I am pretty confident in it's %.

I don't evaporate fully myself. I warm off most of the ISO then put it through other processes. (Not a fan of the scrape ISO)


Its probably roughly a gallon per run to be evaporated off. Even with very low heat (150f?) it takes half a day.

I know its gone because there are no snap, crackle, bubble or pop when smoked and taste has no "burn" in mouth.

I don't go to sleep while in process, but it helps to be an insomniac.
 
Fadedawg

Fadedawg

Well-Known Member
BluJayz said:
Cannabis polymers or something else?
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Taken from http://skunkpharmresearch.com/thc-acetate/

THC Acetate

I was in my first semester of Organic chemistry and had recently synthesized aspirin when Graywolf brought THC-O-Acetate to my attention.Our research into Acetate started and we were all very impressed by the outcome of our first reactionWe have since followed this procedure many times with varied efficiency This variability was caused by and directly proportional to the amount of essential oil in the reaction.The more oil the less efficient the reaction. The maximum amount of oil I use is 20g.When making aspirin, salicylic acid is the raw material for the reaction, Acetic Anhydride is the conjugate and Sulphuric acid (H2SO4) *is the catalyst.The similarities between Salicylic acid and THCA are the carboxylic acid groups that direct the acetic anhydride to form an ester with the phenolic hydroxyl (OH). In fresh plant material of cannabis, most cannabinoids are present as their carboxylic acid form, known as acidic cannabinoids [Shoyama, 1975].Since carboxylic acid and hydroxyl groups are polar and hydrophilic, small amounts of THCA are soluble in water. They can be precipitated at a higher PH and made insoluble at a low PH which can be used to our advantage. See our high purity extraction page for more detailsWhen THCA is converted to THC-O- Acetate, the polar C-OH becomes C-O-CH2C=O-CH3. The carboxylic acid group is hydrolyzed (forms water) by the heating with the H2SO4 which reacts with excess Anhydride to produce acetic acid which reacts with regular THC at the hydroxyl group to form more THC-O-Acetate.Simpler than it sounds, this is a highly efficient reaction, when *catalytic volumes of H2SO4 are added and a Molar excess of acetic anhydride is present.
​
 
BluJayz

BluJayz

Well-Known Member
Fadedawg said:
Taken from http://skunkpharmresearch.com/thc-acetate/

THC Acetate

I was in my first semester of Organic chemistry and had recently synthesized aspirin when Graywolf brought THC-O-Acetate to my attention.Our research into Acetate started and we were all very impressed by the outcome of our first reactionWe have since followed this procedure many times with varied efficiency This variability was caused by and directly proportional to the amount of essential oil in the reaction.The more oil the less efficient the reaction. The maximum amount of oil I use is 20g.When making aspirin, salicylic acid is the raw material for the reaction, Acetic Anhydride is the conjugate and Sulphuric acid (H2SO4) *is the catalyst.The similarities between Salicylic acid and THCA are the carboxylic acid groups that direct the acetic anhydride to form an ester with the phenolic hydroxyl (OH). In fresh plant material of cannabis, most cannabinoids are present as their carboxylic acid form, known as acidic cannabinoids [Shoyama, 1975].Since carboxylic acid and hydroxyl groups are polar and hydrophilic, small amounts of THCA are soluble in water. They can be precipitated at a higher PH and made insoluble at a low PH which can be used to our advantage. See our high purity extraction page for more detailsWhen THCA is converted to THC-O- Acetate, the polar C-OH becomes C-O-CH2C=O-CH3. The carboxylic acid group is hydrolyzed (forms water) by the heating with the H2SO4 which reacts with excess Anhydride to produce acetic acid which reacts with regular THC at the hydroxyl group to form more THC-O-Acetate.Simpler than it sounds, this is a highly efficient reaction, when *catalytic volumes of H2SO4 are added and a Molar excess of acetic anhydride is present.
​
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Now that's some interesting shit. Thanks for that!
 
SaybianTv

SaybianTv

Active Member
I couldn't vac distill without one, not knowing I needed one almost destroyed all my equipment. If you combine it with a hotplate you could stirr down iso then when it get's low wash the beaker and stir bar with ethanol and thin film evap that. I noticed in america everything is $99 dollars on ebay, so if you've got spare education funds it's handy. But I i'm skeptical of a gallon, those ebay things looks like their for beakers, not grandmas pyrex bowl. If your in an evap race why not just butcher a stack ackble food dehydrator that has the right air flow to not put crap in your oil and run it at vac temps for longer? It will up your efficiency by the bending of the surface area and it is good to cycle everything constantly top to bottom, but I spend hours watching stuff distill and other than changing solvent sometimes life just wants you to slow down.

So i guess I'm saying two thumbs up one thumbs down without an additional use like adding the hotplate feature which would make it 3 thumbs up.
 
BluJayz

BluJayz

Well-Known Member
Interesting,

I was considering using the magnetic bar not a stirring rod so the mechanics should never come in contact with the medicine. I was thinking to start with like a 500-1k ml beaker and slowly add more iso as it evaporates. If my brain is processing correctly it should increase the evaporation without adding heat. A low heat could be added within the stirrer for an even cleaner end product that's guy not even need Vacume purging.


i don't have a problem with heat but am interested I am interested in All methods.
 
SaybianTv

SaybianTv

Active Member
Then you gotta try it, you need the big fat football long stir bar if you want to enfold it on itself torus style in a round botton flask. Even in a flat bottom beaker you need the weight of the biggest bar to keep it magnetized at high speeds, all my small bars get thrown. Mind you i'm boiling so I take that back, but you bet setting the plate to 110f and stirring till the funnel hit's the bottom is going to make difference. That's what the big bar does for me when i'm twirling a 1000-4000ml. I even tried using the stir bar in an oil pad I bend into a bowl, it just blobbed up my oil and i had to start again. If your constantly adding then you'll get bang for your buck even if you pull off when the bar starts collecting oil on itself. I can't be arsed I just suck it up and stir down to the bar is stuck then wash with etha again and move on to thin film in my wife's dehydrator. I was so proud to have a seperatory funnel when skunk pharms called out for it in the hexane saline wash, and I eyeballed their whatman vac setup till i had my own buchner funnel for lightning washes of dry ice kief.

Every little bit of these subtleties we share seems to make life richer and more expansive. I put epson salt in the toaster oven and got back anhydrous magnesium sulphate which I then tried to speed vac desiccate with "fail". Just the what if's keep you up on the forum's all night when you start getting curious.
 
BluJayz

BluJayz

Well-Known Member
SaybianTv said:
Then you gotta try it, you need the big fat football long stir bar if you want to enfold it on itself torus style in a round botton flask. Even in a flat bottom beaker you need the weight of the biggest bar to keep it magnetized at high speeds, all my small bars get thrown. Mind you i'm boiling so I take that back, but you bet setting the plate to 110f and stirring till the funnel hit's the bottom is going to make difference. That's what the big bar does for me when i'm twirling a 1000-4000ml. I even tried using the stir bar in an oil pad I bend into a bowl, it just blobbed up my oil and i had to start again. If your constantly adding then you'll get bang for your buck even if you pull off when the bar starts collecting oil on itself. I can't be arsed I just suck it up and stir down to the bar is stuck then wash with etha again and move on to thin film in my wife's dehydrator. I was so proud to have a seperatory funnel when skunk pharms called out for it in the hexane saline wash, and I eyeballed their whatman vac setup till i had my own buchner funnel for lightning washes of dry ice kief.

Every little bit of these subtleties we share seems to make life richer and more expansive. I put epson salt in the toaster oven and got back anhydrous magnesium sulphate which I then tried to speed vac desiccate with "fail". Just the what if's keep you up on the forum's all night when you start getting curious.
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I agree with that, I love reading input like that and stuff skunk and dawg put out. Keeps me going during the day!

I do plan to get one. I need to replace my vacuum chamber and I want to get at-least a 6cfm pump before I spend the $300 on a magnetic hotplate. It's good to know I have the general idea right and have the possibility of another method.
 
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