this post was submitted on 11 Sep 2023
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[DISCLAIMER: I'll emphasise for the sake of clueless readers that Nobody should this at home. I'm talking on abstract grounds, I just wanted to highlight that DIM is easy to produce thus likely cheap. Plus another poster highlighted that the "magic" product is already industrially produced. OK? Seriously, backyard organics is not like backyard electrolysis, there are 100 ways to die out of it.]
Leftover DCM in the end product is the least concern. Purification is basically "add diluted acid", keep the aqueous layer, discard/reuse the solvent layer. You could also boil it off to be extra sure, after crystallisation
The actual danger are the vapours, and mostly towards the amateur, not his guinea pig using this stuff. Carcinogenic, volatile, and flammable - if you try this on a Bunsen burner or a kitchen stove you're risking some explosion, specially if you don't ventilate this well. Amateurs have that tendency to think "this doesn't drip on my hand, it's invisible, so might as well not care that much about it", and then they get wrecked.