How efficent is an isopropyl alcohol extraction?

[jasher]

Hey,

I'm about to use this guide:

Erowid Cannabis Vault : Info on Making Basic Solvent Extracted Hash #1 (http://www.erowid.org/plants/cannabis/cannabis_info.shtml)

I'm wondering if anyone has any information on how long it needs to sit in order to get 99-100% of the cannabinoids out. At the end it says that it will make the weed last twice as long, but can anyone support this claim. Is this a good idea?

Thanks,

Cameron

[stinkyattic]

I let it sit for 24h in a very slightly warm place, strain, add fresh solvent (just a bit), shake to rinse the plant matter again, strain again, then evaporate in a double boiler (GLASS) over a pan of boiling water.
You MUST use a double boiler as the isopropanol fumes coming off the liquid are HIGHLY flammable and yes, I found this out the scary way.
Iso-hash is most often used to extract psychoactive compounds from trim (waste material left from manicuring the buds) on a small scale. IF you are starting with actual bud, look up 'honey oil'. If you have a large amount of trim, use bubble bags.
The chlorophyll is co-extracted in the iso-hash method and the resultant resin is dark green, gooey, and should be stored in tinfoil in the freezer, as it tends to take on a rather unpleasant smell not unlike a swamp on a hot day.

[norkali]

I advise against any iso/solvent extract. Too many health risks when you can simply make kif, bubble, or butter/oil.

Not enough trim/shake/shit? You shouldn't be trying in the first place then.

I've smoked my own fair share of iso-hash / honey oil...... :mad: <--my lungs & throat

H2o bubble, butter, oil, and/or kif? Lungs & throat = :jointsmile:

[stinkyattic]

Bubble hash pwns. It's lovely and has a unique flavor all its own.

[killerweed420]

I prefer the lazy way of just stuffing some small buds and shake in a quart jar full of Vodka and letting it set the frig for a month. And after straining the taste isn't that bad.

[Ant171717]

I used 99% isopropyl alcohol along with just over a quarter of some very nice bud. I let it sit in a canning jar for 2 days then strained the liquid through a coffee strainer and left it on the stove, in a glass plate, with the exaust running. It took around 5 hours untill all the liquid was gone and i was able to scrape up the goo. It was nice and black, not green like the liquid was initally and provided a very nice smoke however I only had about 1.5g of hash. It fucked 6 seasoned smokers up so I suppose it was worth it.. its just hard to see a quarter turn into 1.5g when you are used to quantifying everything your stash in terms of how much it can be sold for.

[Ant171717]

Next I am using the method in this video.

http://www.youtube.com/watch?v=PkvygAXIdr8

The hash looks better and it leaves you with bud.