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On the Moscow route, a spherical condenser tube was used for reflux, but the white smoke in the video was not produced. Is this normal?

d-Methamphetamine Hydrochloride Synthesis Via Tartaric Acid this ？

I haven't done it before, can you teach me?

yes

I don't have this solvent at the moment. You are talking about dissolving meth in hexane and heating it until it is completely dissolved. It is then cooled and crystallized. do you mean this

It seems that I successfully produced methamphetamine, and then isolated type D methamphetamine?

And the crystals obtained are insoluble in acetone

I used heating to quickly evaporate the ethanol and obtain white crystals. I heated the white crystal, and it instantly produced white smoke, with yellow oil remaining on the glass dish. I suspect the meth was not successfully made. Crash 😞

Hi, G. Patton. I am using ethanol for recrystallization and put the solution in the refrigerator. It cannot crystallize. What should I do? Can ethanol be allowed to evaporate naturally?

I don't know what that is, it's the product of adding sodium thiosulfate and sodium hydroxide to the toluene extract.

Sorry, I expressed it incorrectly. I experimented with 1g of pseudoephedrine hydrochloride and ended up with only 1.5g of methamphetamine.

Maybe I didn't do the extraction well. 1g of pseudoephedrine hydrochloride weighs only 1.5g after drying. There is still a pungent smell of hydrogen chloride. Should I filter the solution before extracting the free base with toluene? Because when I added sodium thiosulfate and sodium hydroxide...

Hello, I follow the Moscow route. In the last step, hydrogen chloride gas is passed into the toluene extraction solution, and some transparent crystalline substances are obtained in the wall of the beaker, unlike the white powder in the video. I simply can't stand the pungent smell of hydrogen...

Hello, I follow the Moscow route. In the last step, hydrogen chloride gas is passed into the toluene extraction solution, and some transparent crystalline substances are obtained in the wall of the beaker, unlike the white powder in the video. I simply can't stand the pungent smell of hydrogen...

Thank you very much Patton. Yesterday I researched a pill and first dissolved it with ethanol. According to the information, I found that only pseudoephedrine hydrochloride, cetirizine hydrochloride, and hypromellose can be dissolved. I do get crystals. My current thought is to dissolve them...

Hello, Patton, in method two, can acetone be used instead of methyl ethyl ketone? Can xylene be replaced with toluene? Can you show me a picture of the pseudoephedrine hydrochloride extracted from the pills? At one point I had an extract that was like fiberglass, but I'm not sure that was it.