Example of isomer separation for Meth

qwe111

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Dear Mr.
Use L tartaric acid to separate the free base according to your method.
I got a chewing gum-like substance while stirring, and once I stopped stirring everything turned into a very hard white solid. A whole piece.
Is this correct?
 

btcboss2022

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Yes
 
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btcboss2022

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It won't turn liquid the liquid is mixed with the hard solid you must crush it to vacuum filtration and get the liquid.
About freebase yield from p2p is ok if not steam distilled p2p used.
 

qwe111

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Dear Mr.

I used L tartaric acid to separate the free base. Vacuum gives liquid. Alkaline PH-13. Free base is obtained.

Stir the free base. Join HCI. PH value -2. I wanted to adjust the pH to -3. But the pH suddenly dropped. I'm careful to add very little HCI. The pH value has always been around 7 in the beginning. Then suddenly it drops to -2.

Heat to 130°. Pour into a container with 10 volumes of chilled isopropyl alcohol. A lot of powder immediately appeared in the container. Shouldn't we get crystals?

What did I do wrong?

Sir, please help me.
 

novato

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El siguiente paso despues de la separación de los isomeros serían agregarle hidróxido de sodio disuelto en agua, al tartarico que quedó, se le agrega hidróxido hasta llegas al ph13 y se va hacer aceite, ese aceite se va cocinar con tiolico y percadox, de la siguiente manera o proceso.
A cada 30 litros de aceite se le va agregar 2 litros de tiolico o tiol, se va poner a hervir hasta llegar a 160 grados centígrados, una vez que llegas a esa temperatura se le agrega 2 kilos de percadox poco a poco por qué va hacer una reacción se revuelve para que todo el percadox se halla disuelto y quede homogéneo y se mantiene la temperatura por 10 minutos más.
Después se deja enfriar a temperatura ambiente y al día siguiente o una vez enfriado se vuelve agregar tartarico como en el primer proceso para separar los isomeros e ahí el ciclo que aparece en la imagen
 
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btcboss2022

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Hello,

What is the source of that info please?
Thanks.
 

novato

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Ya se ha realizado, es por eso que es tan detallada la explicación
 

btcboss2022

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I don't know the source of that process but adding perkadox at high temp has a big risk of explosion, in fact it shipping only could be done in special containers to have a temp below 20C and that's not to mention the difficulty in obtaining that product, which makes it necessary to be very sure about the process to try to obtain it.
 

novato

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Si hace una reacción a estás temperatura y eso es lo que favorece a qué el isomeros l se convierta en d
 

btcboss2022

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And whats the source of that process please?Thanks.
 

btcboss2022

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And another important problem here is that Perkadox is a brand name and has many different products for initiators (Di(4-tert-butylcyclohexyl) peroxydicarbonate,AIBN, AMBN, ...)each one works different in amount and temperatures I guess that for that process Di(4-tert-butylcyclohexyl) peroxydicarbonate is used but AIBN could be used too in correct ratio.
 

subzero

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Is it true that levo salts will start to pp if l-tartaric acid is added in excess ?
 

Jorg

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We call it Netherlands ship method of recycle. Heard only good things about it,didnt try it out yet. Thanks for the post.
 

hunter12

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Please help, after mixing amd leaving it overnight it turned out pink.
 

btcboss2022

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Pink color normally means too acid but not in 100% of cases also could be impurities from your freebase, check the PH should be around 4 anyway I dont see any precipitate in your pic.
 
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hunter12

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I used clean distilled meth freebase. The PH is 4.5-5. There are no precipitate. And it only heat up to around 30 degrees during vigorous mixing. There was no precipitate that showed even during mixing
 

btcboss2022

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Tell me all details if not can't know where is the possible problem.
 

hunter12

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I mixed 160ml water and 70 grams tataric acid then added 100 grams distilled freebase with heavy stirring (using magnetic stirrer). It got aqueous cloudy but with no precipitate, then left it overnight and found it pink in the morning
 

hunter12

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I used l-tartaric acid (cas 87-69-4)
 

qwe111

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Is there some thick material appearing on the walls of the beaker during stirring?
If there is. Use a glass rod to scratch the side of the beaker. Will help with crystallization.
 

btcboss2022

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Try 150ml h2O+80gr tartaric once dissolved add the freebase with heavy stirring until solid mass formed could take some minutes.
 

hunter12

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Ok thanks il try that, il come back with results
 

btcboss2022

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On my experience I think it needs more time stirring it's getting thick and finally solid.
 

hunter12

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This is how it is
 

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