it goes up really fast, Yes, a condenser like the Hex would work fine with ethanol and is the same basic design that I built our ethanol recovery still with. There can be no hexane in a pure essential oil.. You mean Cannabis. What it takes to repeat success is a commitment to observing carefully and closely. But oil is not soluble in water so we have to go for some other solvents. What sort of analysis will you be performing on the solution?
At the time I did not think anything of the yellow layer but save everything to study later. In my humble opinion, you are doing it absolutely right. When it is almost all gone, do it again, and repeat, until there is no decernable hexane odor. Do let me know if you have any issues relating with the simple experimental set-up".

http://skunkpharmresearch.com/alcohol-reclaim-still/, Yes, and thanks again for the design ideas. Added saturated salt water like instructed, shook, separated, and drained water off, and color did not change. I saturated the oil in ethanol, ran it through a vacuum assisted filter using a watman 1 filter, pulled out a ton of gunk, then dumped hexane and saturated salt water into the seperatory funnel as instructed, poured out the water and ethanol mixture, using the funnel, saving the hexane and terpine mixture that was the dark color on top, just like the picutres, and I have been running salt water though allllll day and the color isn't getting any lighter. Note also that oxygen in a breathing atmosphere greater than 75% pure will kill us dead! The rest feels toxic when inhaled. Any solvent placed into an oven, as in step 2 will ignite as soon as the vapor reaches its flash point. Put back into freezer for a couple of hours and repeat 2 more times so you have a good clean product. Hexane has been unpredictable for me in the seperatory funnel in terms of repeatable results. Method #1, pour your fluid into a glass, Pyrex pie plate, place a small fan in front to blow over the top. Test tubes would work but I got mine at Petco down the street. The question assumes a lot. GW. I wring the tea bags and am left with white waxy stuff and other solids. I'm glad if anyone could help me in this? Do you honestly believe the extracts you obtain do not have dust, eyelashes, bug parts, and every other thing that floats around in our atmosphere? Here is a link to a DIY evaporator that addresses that issue. WARNING: THE LC50 VALUES HEREUNDER ARE ESTIMATED ON THE BASIS OF A 4-HOUR EXPOSURE. Four month old trim will be significantly darker than fresh trim.


For further discussion of that subject, please see: /chlorophyll-pickup-in-extractions/. Once, a mix of hexane and acetone and water in my experiment formed a layer underneath the hexane. Do you have data that shows ordinary dust found in every single food product, tobacco, and marijuanna leaf to be more hazardous to human health than the MSDS shows for either pinene or limonene? GW, Hi

What is the best method to recover the oil from the solvent mixture (n-hexane)? Anthrocyanin plant pigments are one of the prime culprits, and are about a ~C-30 molecule, in the same range as chlorophyll and plant waxes. Hexanes dielectric index is closer to 1.3 and for all practical purposes, isn't miscible, so I thinking not. I often remove the water gunk by tossing the dish into my freezer. Below 10 degrees celsius, outdoors, not frozen... 90 seconds wash. GW. How to remove hexane from a extracted essential oil sample ? I already posted a very simple way to do this, however I am a stoner. If anyone knows the actual detailed procedure, please let me know. Prior to centrifuge I would place the tubes in my freezer which is set to lowest temp. A rice grain size vaped into my Vapir 1 bag fills the bag twice with a dense foggy cool sweet orgasmic vapor. I notice the first pull down to -29.5Hg lets the extraction boil off very rapidly, then slows to a crawl. I better wrap it up now....I have a bag that is just waiting for some vapor. Depending if you want to recapture your Ethanol or not, the next step is to remove/reclaim your Ethanol. Method #2, rotovap, or any other way to reclaim. Hey skunkpharm! I like iso because it falls in just the right niche polarity wise to target the medicine. The resulting black gunk can easily be purified/purged much further until it is deep red (normally). This new vid I made this morning boils the extract and also makes the water a bit murky. From the sounds of it, you say you can't get it to dry out.

I don't know about onion but I have been messing around with the herbs from the garden. I have not observed salt having any significant impact in my own experiments, but it was cool to see salt crystals form in the extract upon drying. Plus remember that "Hexane" is not the name of a particular chemical but names a group of chemicals with substantially the same characteristics. See: http://www.nlm.nih.gov/medlineplus/ency/article/002893.htm  for details. You can also place out in the sunlight for a few hours to breakdown more chlorophyll before placing into the freezer for the last time. Shatter consistency is caused imo by impurities in the extract. The hexane layer was dark but the layer underneath was light yellow... Could I use pure acetone to re-dissolve my oil (as I use acetone to extract it from plant material anyways) and then simply salt water-wash that in a separatory funnel to clean it, then evaporate the acetone on a 140F hot plate? The process is known generally as Dry Column Vacuum Chromatograph (DCVC) although the only references I find online relate to the method as used with silica gel as the stationary phase. I've been waiting for Pharmer Joe to return from over the hill and far away consulting, because he's our brain trust on salvaging babies out of their bath waters, but will pass on a couple thoughts in the interim. After it is lit I turn the cigarette up so anything fluid drips out and I let the icky part flame off.

Take a puff and it will knock your socks off lolz. They worked well for our purpose, and we cleaned them when they clogged, by alternating a hot aqueous NaOH solution and a HNO3 solution, to break organic bonds. I have seen various layers form but trying to repeat the results is hard. I noted above how it inhales. There are orders of magnittude less solvents used in this process compared with Flash Chromatography. How can I clean up my wax if I bought it from a friend and it looks like poop soup and very hard to work with? The video demonstrates my modification in that I force a separation at a 50% mix of water to iso. Given our 30ppm taste sensory threshold and our 130 ppm odor threshold, we can detect its presence, long before we reach levels of concern. I strive to recover the $100 per gallon hexane and other spendy solvents but when they are mixed it is just too tough for me to get a clean seperation so usually they get evaporated. I have successfully purged to nearly pure so many grams of extract that my cupboards are overflowing with tiny plastic pucks and their lids lolz - AND I cleaned them out already!!! AIM: The objective of this study was to compare the efficiency of lipid extraction and to evaluate the fatty-acid composition in total lipids from human plasma, using a new technique and the established Folch, Lees and Stanley (FLS), Bligh and Dyer (BD), Rose-Gottlieb (RG), and Gerber (GM) methods. It begins boiling off the iso/water immediately. Really icky goop in bottom of centrifuge tubes actually makes a good skin lotion that immediately softens my skin. I don't have access to butane, I am pretty much a double-boiler type QWET setup (NuWave w/candy thermometer for the cooking oil, stainless steel 2 cup UKonserve container for the mash/oil). The third time it was even lighter, but the hexane/oil was still dark.

This step isn't essential, but it did seem to help. Also wanted to polish BHO with Everclear. Eventually the oil wil seperate from the alcohol in the seperatory funnel as fresh water is added. I use a rod in the lip end to plug the cigarette and to hold it comforatbly from the heat. When in the seperatory funnel in conjunction with hexane and iso I have seen odd seperations happen.

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