03-17-04 03:55
No 495603
A friend was grinding cannabis foliage to a fine powder, covering it with alcohol solvent, filtering out the plant material after it was allowed to soak, and then allowing the alcohol to evaporate in an effort to make a cannabis extraction. I sugested that, because I knew THC was lipid soluable and there for non-polar, it would be more effective to extract the Cannabinol and Tetrahydrocannabinol by using a non-polar solvent such as ether or benzene. Am I correct in my assumption that a non-polar solvent would make for a more pure extraction of cannabis? If so, which solvent would be the better choice, ether or benzene?
(Fragile ego)
03-17-04 04:48
No 495611
search here and google for "butane" extractions and "honey hash oil"
http://www.democracynow.org/ - The Exception to the Rulers
(Hive Bee)
03-18-04 04:53
No 495851
I'm familiar with this technique but I was looking at other alternatives...
03-18-04 10:12
(Rated as: insignificant)
03-19-04 02:48
(Rated as: insignificant)
(Hive Bee)
03-19-04 03:51
No 496049
* Dissolve the extract in absolute ethanol or pure methanol in the ratio of
one gram extract to ten grams solvent. There must be no water in this
solution, as the next step is the addition of one drop of 100% sulfuric acid
per gram of extract.
* Add the acid slowly, drop by drop, stirring slowly and completely, with a
long glass stirring rod.
* Place a Pyrex pot containing the extract-alcohol-acid solution into the
refluxing apparatus and reflux for two hours. The acid will not evaporate
and will remain in the Pyrex pot. Allow to cool.
* Take the cooled solution, pour with an equal volume of water and 1/2 volume
of petroleum ether into the ether-extraction apparatus (separation funnel).
* Allow to settle, and drain the ether extract layer.
* This leaves an ether-extract-acid mix from which the acid must be purged.
To accomplish this, pour the ether-extract-solution into four volumes of 5%
sodium bicarbonate solution (1 gram bicarb. in 20 grams of water). This
will neutralize the acid, releasing CO2 and leaving a solution of sodium
sulphate.
* Allow this to settle into layers, then drain the ether-extract layer.
* Mix the ether-extract solution with an equal volume of pure water and let
it separate.
* Drain off the ether-extract layer.
* Evaporate the ether and what remains are purified alkaloids.
(Moderator)
03-20-04 01:38
No 496227
(Rated as: good read)
These two articles by Adams et al should answer all of your questions, the citations are JACS 62 198 (1940) & 63 2211 (1941)
Chemistry is our Covalent Bond
(Newbee)
03-22-04 11:14
No 496602
organic acid?
er what about phosphoric? that's possible with anhydrousness isn't it? or is that 'organic' as in organic, like tartaric (no i don't think so just seeing)
anyways what about phosphoric acid. the synths for isomerising i've read say '98% H2SO4' and stuff anyway. would phosphoric acid do it?
anyway, i tried taking oil one time and boiling it with hydrochloric acid - it did indeed seem to change the effect but it was also greatly diminished in quantity. that could have been operator error.
oh also, i am interested to know whether pentane would serve just as well as butane for extracting pure oil...
actually, i don't think so. from my limited experience, hexane, pentane toluene whatever all just pull brown oil from the plant material rather than the gacky deep dark green.
I want to try out acetone at some stage, because i think the most useful extraction tek for cannabis would render a product like homogenised hashish. i think that probably requires the extraction of waxes and resins which may be too polar for butane and to non-polar for alcohols... but ketones and esters sit in the middle... what about acetone, what about ethyl acetate? the waxes/resins are a very important part of the way that the material vapourises and pyrolises etc. Also there's probably nasty things that are more polar than thc that dissolve in the very polar hexanes etc that ruin the smoking effect too (high boiling oils of some kind?)
is that a silly thought?
(Hive Bee)
03-30-04 10:06
No 498062
Petroleum ether supposedly doesn't pick up sugars or chlorophylls.
iso/methaol do.
never tried ethanol.
Just work it baby!
(Hive Bee)
05-27-04 02:56
No 509821
Could you simplify this biarch by just extracting with an organic solvent and acidified water, heating, mixing, and then seperating? Would it be easier to use a heavy organic (so that it sits with the cannabis material or a light organic (so you didn't need to filter, just separate off the organic)?
(Hive Bee)
05-27-04 09:09
No 509884
prob the easiest method swim has done is just
- Chop bud to fine powder
- Soak in acetone overnight
- Filter acetone through panty hose
- Evap acetone
Works great on even 1 gram of bud.
(PVC-Analog Taste-Tester)
05-27-04 23:56
No 509970
In my dreams, I get a cleaner product with toluene or benzene vs. propanol, THF or acetone. Put an 8th through a mini coffee-grinder, but only chop it up enough that it would be good enough to roll in a joint; Grinding it to a fine powder will make it harder to filter later.. Add this to a coffee filter and tie it off with a paper clip; leave plenty of room within the coffee filter so the weed will have no problem mingling with the toluene. Squeeze this into a 500ml sep funnel, add near-boiling toluene to this, cap it off and let it sit for about a week, swirling it around every day. When the time came to open the stop-cock and filter, I let out a little at a time into a large test tube, boiled off the toluene, added more, boiled, etc.. Sounds tedious because it is, but the product is some sticky, messy shit, so I like to keep it in a small area instead of being spread all over a beaker. The residue can be dissolved in propanol, poured into a smaller test tube and boiled down again. That took forever, so I was thinking that next time I could suspend the "tea-bag" by a coat-hanger into a flask of boiling toluene.
Love My Country, Fear My Government
(Hive Bee)
05-28-04 05:25
No 509999
You think Acetone works better than Methanol?
(Stranger)
05-28-04 05:44
No 510001
Acetone IS a better solvent for THC than those alcohols.
And if the masses have agreed to split the sea then let it bleed.
(Hive Bee)
05-28-04 07:22
No 510014
Yeah acetone is defiently! better then methanol or ethanol. Also swim has found that leaving the solvent soaking with the mass for 24 hours compared to longer times like a week doesnt make a difference at all.
(Hive Adickt)
05-28-04 09:15
No 510025
This is the usual question about quality and quantity. Butane or Pentane gives the highest quality oil. Acetone gives you the highest quantity
(Hive Bee)
06-01-04 15:41
No 510716
Acetone does work, and hands down produces the largest yeild I've seen. I even tried saving up a small bag of stem, which i soaked in acetone, and filtered. And got about 10 papers covered in black oil. Whole stems made it easy to filter.
The shit part is the acetone method pulls everything from your ganj. It bleaches the bud pure white. This means when your burn it you get little floating pieces of ?carbon? in the air around you. Its rather gross, but does work easily.
I would try anything other than tone if you are interested in quality. Butane of course is an obvius choice, but what about plain old mineral spirits?
Drop Bush! Not Bombs.
(Hive Bee)
06-04-04 01:49
No 511309
I wouldn't consider Acetone to be the better solvent if it is ripping everything out, at least Methyl Alcohol leaves some of the sugars and chlorophylls behind...