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Indlæg: 16 apr 2016 13:52 
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Hey folkens,

Jeg har modtaget et par poser mdma som er blevet knust under turen.
Er der nogen der har en guide til at omkrystallisere uden af renheden bliver forpuret.
Alt hjælp modtages :)

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Indlæg: 16 apr 2016 14:05 
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Tilmeldt: 05 nov 2010 00:23
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Aner ikke om det holder stik men fandt dette:

"Recrystallization absolutely DOES get rid of impurities more than an acetone wash, that's the entire purpose of recrystallization. Use the pot/pan to make a hot-water bath, you can get the water up to boiling. Then use a second, smaller container in this water bath (imagine something like a double-boiler) to heat up the IPA to boiling. It is very dangerous to heat solvents on direct heat because most are extremely flammable and IPA is no exception. Then, in a small glass, perhaps something like a wine glass, you slowly add the hot IPA to the crystals you have, swirling to mix, until you have just barely dissolve ALL of them.

You don't want to do the actual recrystallization in a large pan or on a plate because you don't want the solvent to evaporate. The solvent needs to still be there after cooling is complete, so that it can be poured off once the recrystallization is complete. If the solvent simply evaporates, you haven't removed any impurities.

With all that being said, if you already know that the stuff you have is pure, this is a very wasteful idea. By its very nature, recrystallization ALWAYS wastes some of the material, even if it is performed perfectly, in perfect conditions, with perfect equipment. While crystal size CAN be indicative of quality, the reverse is not always true. Small crystals doesn't necessarily = impure product. Small crystals CAN mean impure material, or it can also mean material that crystallized very quickly but was still very pure"

http://www.bluelight.org/vb/threads/627 ... ion-Advise

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