Example of Methamphetamine Isomers Separation

Sjeik

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Ilyennek kell lennie.

FkJsC5vV1D
FkJsC5vV1D
 

lalalander

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Does using a larger amount of water so that the mixture does not turn into a paste affect the solubility of the L-Meth-tartrate salt?

Because it's almost impossible to work with the vacuum filter when it's like a paste.

Maybe I should add freebase slowly to avoid amorphous paste solid?
 

Acab1312

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Ajánlom a fagyasztót. Ebben az esetben minél hidegebb, annál jobb. A hőmérsékleteket soha nem mértük, a metanolomat mindig a fagyasztóban tárolom.

-A polaritás (polariméterrel tesztelve) egy átjárás után.

- H20 (68-73% d)

- Metanol (71-76% d)

- Rusznak-eljárás, toluol mint benzolhelyettesítő (még mindig nem sikerült racém)

- Pope - Peachey : h20/sósav
(65-80 % d időfüggő)

Én a h20-as módszert részesítem előnyben a költségek, az idő és az egyszerűség miatt.

Remélem tudtam segíteni.
 

lalalander

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Does using a larger amount of water so that the mixture does not turn into a paste affect the solubility of the L-Meth-tartrate salt?

Because it's almost impossible to work with the vacuum filter when it's like a paste.

Maybe I should add freebase slowly to avoid amorphous paste solid?
 

William Dampier

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You can heat the mixture, obtain a solution (add a little solvent if slight heating doesn’t help), and then crystallize it more controllably with slow cooling to get a more easily filterable fraction.
 
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