elric40

You use 1-2 drops of Sulphuric Acid for every cup of Alcohol/Oil mix and heat 1-2 hours. You use a little more acid and add time if you are doing a "full load" of finely ground stuff vs. loosley cramming a couple ozs of leaves for a small run.

Also, if you want to clean the oil up, simply mix your neutralized alcohol solution (after adding baking soda) to an equivalent measure of water and stir well. Then add about a 1/3 equivalent measure of toluene (an industrial solvent available on inet) and stir well. Quickly place all in a separatory funnel and stir well (A Ring Stand to hold the funnel is VERY helpful). Let it sit for a few minutes, and the Alcohol/Water/Chlorophyll/Contaminant (the "green" part of the mixture) will separate out to the bottom of the funnel. You should now have a light greenish layer on the bottom of the Sep Funnel, a layer of Toluene is next, and your oil is mostly floating on the top of that. Simply bleed off the alcohol/chlorophyll etc mixture, put it back in the iso2 with a glass in the soxhlet basket and reclaim your alcohol on low heat for your next run.

Throw the "green slime" left in the bucket away, its just water and contaminants. Now separate the toluene/oil mixture with the iso2, then when you have most of it separated, open the iso2 in a well ventilated area on high and burn off the remainder of the toluene. You'll be left with beautiful black oil with none of that crappy green tinted plant "goo" in it. Hope this helps.