Hello everyone, I recently had some meth which I tried to recrystallize, so I made it a freebase then poured toluene over it. Next thing I did was pouring a solution of 5% HCl in order to recrystallize. I poured a slight excess because of the lower concentration of the acid. After a few days I noticed that the toluene layer became smaller and smaller until it was barely visible... Can I let the water evaporate to get crystals? I'm in doubt because of the thinning of the non polar layer... Help...
Ur doing it wrong ... I don't know too much about this thing respective of methamphetamine and don't condone it's use or manufacture. But for any synthetic route, you should use various techniques including various solvents to eliminate as many impurities as you can from your precursors and during sythesis as possible (at various stages in the synth). You should form a salt before you even think about recrystallization (unless your freebase crystallizes and is a solid at room temp, but I don't think that applies here); I don't really know what you're doing or trying to do though, there are often not one but many synthetic routes to a compound and I'm not an O-chem major. To salt you should probably gas a solution holding a freebase with HCl (g) to precipitate a salt. Don't use an aqueous acid solution, as your salt will just end up as an aqueous solution, due to the water content, which is it most likely highly soluble in, as well as certain impurities. But looking at it as general chemistry, usually if you want to crystallize something from a solution you need to find a solvent that what you want to crystallize is readily soluble in. Saturate or nearly saturate the solvent with solute, then slowly titrate in a solvent in which your solute has poor solubility (such as via addition funnel or pipette) and your solute should precipitate out as crystals which can be collected on filter paper, the two solvents of choice should be miscible with each other (e.g. methanol and acetone and/or ethyl acetate) . Do some research, certain impurities are far more soluble in some solvents than your desired end product. These are just common techniques used in chemistry, but remember this: speed kills, or will make you go crazy and kill yourself; check yourself before you wreck yourself. And prison really sucks btw, unless you like the big black cock.
