So for all the research I've done the general consensus is to obviously do an evap test on your solvents first to make sure no residue is left behind. Next when you are evaping/precipitating crystals wait until your final product has no smell of solvent left behind, give it some more time and you should be good to go. One must wonder though are there still minuscule amounts of solvent trapped inside of the crystal that will be consumed? I was also confronted with this statement from a buddy...

"it had something to do with hydrocarbons (which Naptha is) having a billion binding sites making it super easy for it to latch onto other chemicals...And that he'd be afraid that a less-than-lab-grade solvent would leave benzene rings behind, which are like... f'in terrible for you....Wiki'd it cause I want to be sure what I'm talkin' about, "Benzene causes cancer and other illnesses. Benzene is a "notorious cause" of bone marrow failure. "Vast quantities of epidemiologic, clinical, and laboratory data" link benzene to aplastic anemia, acute leukemia, and bone marrow abnormalities"

It's something that we all wonder, but since it's never mentioned in extraction processes or forums, it seems to me that if your evap test comes back clean, then your final product should be clean AND solvent free.

PLEASE some insight on this topic. Thank you & MUCH love my fellow Terrestrials.

no.

and cancer is caused from long-term exposure to mutagens, not acute.
don't worry, you're just paranoid

First a disclaimer: Benz knows much more of chemistry than I do..

But I disagree with him. It has been documented several times about residual solvent trapped inside different kinds of crystals in literature:

gc-ms analysis of solvent trapped inside cocaine

Crystallization of organic compounds

effect of solvent on crystal structure

Now, of course there are all sorts of factors to this. Big crystal formations left undisturbed may trap more solvent, while breaking the crystals up into powder and letting it dry will certainly reduce the amount of solvent traces. In Trout's Notes, he also mentiones the very common residual taste of hydrocarbons in DMT. Anybody that extracted DMT with something like BLAB, salted with fumarate and converted fumarates to freebase with water crystallization, will know first-hand how incredibly different and much softer the smell of DMT crystallized from water actually is, in comparison to hydrocarbon-crystallized DMT.

So what can you do to eliminate solvent traces? One thing, as said, is to break up crystals. Another thing would be to redissolve in a fast evaporating and/or less toxic solvent (such as clean acetone or ethanol), and re-evaporating. Another possibility is salting out your solvent with fumaric acid, washing your fumarates with acetone to remove your other solvent traces, letting it dry, then redissolving in water and doing the water crystallization as described in BLAB, and knowing the last thing to touch your crystals was water is much nicer.

Regarding health, as benz said, health issues arise from long term exposure, and I would also guess that in general there is nothing to worry about if you broke it up into powder and let it dry for a while, that we are probably being over-careful, and that most people specially living in big cities are probably subjected to more toxic substances than anybody smoking dmt with a bit of solvents.

Nevertheless, considering its not hard to work to eliminate those traces, and that some people may smoke DMT regularly and/or over the years, I dont think its bad to question oneself how to eliminate solvent traces. Also, often one is not simply inhaling a bit of solvent with the DMT but might be also inhaling different combustion byproducts (if dmt is smoked instead of vaporized), which would add to the unknown health risk factors.

Just to make sure there are no traces, I don't smoke if it's not redissolved in acetone. The product is just the same, only powder, not crystals.

Thanks to all 3 of you, great information. I've heard that a vacuum pump will force evap solvents out of your final product assuming the boiling point of your solvent is less than the boiling point of your product, any thoughts on this. Seems like it would be less time consuming & possibly more effective. Can't hurt to do both methods either. Once again thank you my fellow Terrestrials.