Methamphetamine Synthesis from Ephedrine by Using I2 and H3PO2

[caydiantak]

does this work with pseudo?

 

[Toti]

Hi is there any difference if i use sudoephedrine in this recepe ?
Thank you

 

[Throw-off]

Different ratios for ephedrine and pseudo.

 

[ZMI_AA0B]

May I ask which non-polar solvents can be used to extract methamphetamine

 

[hacke8]

Yes, you can use toluene, benzene, xylene, either. They will not be distilled with the solvent because their boiling point is higher than that of the solvent. You can directly enter the hydrogen chloride gas after drying, without affecting it.

 

[hacke8]

After the extraction is completed, keep your toluene solution, and add sodium sulfate to the solution to dry. Filter, then put hydrogen chloride gas into the solution, and the white powder is your product.

 

[ZMI_AA0B]

Teacher, do you not need to use petroleum ether

 

[ZMI_AA0B]

Teacher, how do those powders turn into crystals

 

[hacke8]

You can use petroleum ether, it depends on your own schedule, and the powder recrystallizes into ice. You can refer to the ICE theme.

 

[JJ237]

Can you please show me this ice theme. I still find it difficult to recrystallize my meth powder to ice

 

[ZMI_AA0B]

Just now, a magical thing happened. After drying the toluene solution, hydrogen chloride was introduced, leaving less than 0.5 grams of powder. However, when I filtered the original solution, it turned back into pseudoephedrine

 

[ZMI_AA0B]

After heating and refluxing, add 20ml of water first, then adjust the pH value of the alkali to above 10, then add sodium thiosulfate, and then use toluene for extraction instead of dcm. Is there any mistake in these procedures at present?

 

[hacke8]

If everything is correct according to the process, the white powder is your product.

 

[ZMI_AA0B]

Is there a faster way to crystallize, teacher

 

[hacke8]

No, the slower the crystallization, the greater. Recrystallization is a matter of urgency. You have to be patient to get a big crystal.

 

[ZMI_AA0B]

How does the powder crystallize?

 

[situ1988]

Is the CAS number of hypophosphorous acid: 7664-38-2 correct?

 

[G.Patton]

+

 

[darkskin]

Great workup, thanks for sharing. Been do this type of reduction twice, first exactly like the writeup ephedrine firs followed by h3po2 then iodine and its really intense reaction. Reflux for 6 hours and only get about 33% yield.
The second is i make the hi first in boiling flask by mixing iodine to h3po2 under cold condition. then pour the ephedrine, this way its not so intense like the first, reflux for about 8 hours and i get about 51 % yield

 

[Jumin]

Hi, I wanna know how do we recrystallize this powder we get at the end of the process??? Can someone explain please??

 

[JJ237]

How do we convert the powdered meth to crystals ice or shards

 

[otw247]

What would happen if one was to use L-PAC based ephedrine with this method?

 

[stevepreston]

can i use hydriodic acid 57% instead of hypophosphorus acid ?

 

[kackbratze]

hello, i have a question: instead of Iodine could Potassium Iodine beeing used? Becaus Potassium Idodine is purchased much more easily.

 

[G.Patton]

Hello, no. These substances has different chemical properties.

 

[Throw-off]

You can use pottasium iodine to make iodine. It can be done in a lazy Sunday afternoon.