Thanks for clarification, Du57mi73
Well, i thought KOH could be little less toxic than NaOH, but i don't have much knowledge of chemistry, so i wanted to ask.
I have three things in mind that need to be improved in my extraction process. Find a good glass vessel with a glass cap preferably and a suitable thin-neck shape for nps-pulls. Get a better understanding of appropriate temperatures on the acid/salt/base steps. On my first extraction as soon as naphtha separated on the top the very first time it was transparent as it originally is. On my following extractions, i noticed that naphtha get a yellowish color just as it separated the first time. And as far as i remember, this happened to all the four pulls. I do not heat the solvent, just put room temp it in the basified mix which on the other hand i place in a warm water bath. I also notice that the solvent remains transparently yellowish as soon as i pull and it hits the dish.
Other thing that could have caused might be too big difference in temperature of solvent (coming out slightly warmed in the basified mix) and temperature of the dish (room-temp). I might have also not evaporated it the right way.
I suppose that what i have in my final product is more likely to me some solvent trapped in the spice? It could also be fats from the plant, but that didn't happen the first time, which is what confuses me. The only thing i changed for 2nd and 3rd extractions is the salt. And a little bit more of water to get the mixture level high enough in the bottle so that nps would stay in its thin part. But that was just 50-100 ml more water. Could this have resulted the yellowish final product. If i change the ratio of water per the same ratio of bark/acid/salt/NaOH , could that drastically change the pH, thus letting more plant fats and other alkaloids in final product? Each time i used 30 g NaOH, as Cyb's tek suggests 50 g. I know there are many factors and variables involved but i am just trying to figure it out before doing next extraction.
I used Zippo Lighter Fluid these 3 times. Might be a silly thing to ask but could the age of the solvent have any influence on how it reacts with compounds? I mean, is it possible that if it's older, it would collect more fats and other alkaloids?
I got all lab grade chemicals now, glass pipettes, will get a glass reaction vessel as those used in labs, just to avoid reaction between base and metal cap. Just want to clear things up as much as possible. I have in mind a reaction vessel like this one :
Only thing that worries me is it going to be thin enough for solvent collection with a pipette