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If re-crystallization only, I would suggest this route. I haven't done this by myself as I didn't have cocaine in such quantity and needs, but it must work 200% considering all I know about cocaine hcl and its physical properties. you may try with smallest quantity first just to see how it...

do you want to make base extraction or just re-crystallize?

I guess you overestimate MDMA FB solubility in DCM, petroleum ether, hexanne and similar solvents. In the reality it is about 3-4 ml of those solvents per 1 gr of base.

Most beautiful MDMA I've ever seen. Is it MDMA HCL? How you make it so transparent bro? I can make MDMA HCL pure white, not difficult. But still can achieve high transparency.

No, I'm not about 50/50 isomers. I mean: I got 20 gr of "S" base and 28 gr of "R" base against 58-60 gr of racemic base. 10 gr of base lost.

Could you folks tell me what is the meaning of reflux here? Reaction of tartaric with base is pretty exothermic itself. So, why reflux is done here? Sorry for stupid question.

IPA removes all oily traces well. Your fingerprints are exactly oily traces.

Is there a shortage of nitril gloves in your city?

Simple, bro: put small pieces of transparent tape on your fingers. The person on other side of postal counter will notice nothing.

Obvious problems of this method!!! I acidify S-freebase with 36% HCl till PH=2, in frozen acetone on the ice bath. Normally, I keep it in the freezer for 72 hours, and get around 90-95% yeld of expected. Then, if I keep leftovers in the freezer more, I get more crystals as well. But, in this...

I love to resolve difficult questions. And it looks MDMA isomers are different from meth.

@btcboss2022 a question, when you crystallize your d-meth in acetone, didn't you notice the powder you get is much much more fine than those from racemic?

Is there any detailed description of this process? Is it the same for MDMA?

Sure, but too expensie. But I've already found a solution with a source of polarized light and linear polarized glass. Obviously it is not such precise as a polarimeter, but may give first impression.

Looking for a method of a kind of qualitative isomers volume estimation. I.e. I'm not looking for exact isomers ratio. The only thing I need is to find out what isomer predominates in racemic mixture. Is there a way to build the reaction similar with Simon's reagent? I mean, let's take some...

Looking for a vendor who can purchase reagents from Warchem or similar,, and ship them with DPD or any other anonimous method to one of EU countries. Nothing especial : methanol, ethanol, ether, acetone etc.

Hi, folks! Little upset with your timing gaps. Sent you two samples, tracking says delivered a week ago, but not appeared yet in your system. Then, probably, I have to wait 3 more weeks to get test results (as last time). May be, you shall improve something about timing, as such gaps make tests...

I have done successful mdma isomers separation with l-tartaric. But I have some other idea now. I just want to check the difference of two salts i finally obtained with reagents. But i'm too greedy to pay 260 eur x 2 for energy control. Now it is more than enough if I get an evidence: sample A...

In other words, you have purchased a device for the qualitative determination of the predominance of R/S isomers? What is the principle and cost of such tool?

@G.Patton general, is there any simple test that may show qualitative reaction for R or S isomers or prevalation of one of them in racemic mixture? In this video Simon's reaction was mentioned, but I haven't found any info about it. Well known Simon's reagent turns deep blue with MDMA and meth...