Yes no problem freeze precipitating spice extraced using toluene by redisovling in naptha and sticking in the freezer. But if you want to grow nice big xtals the slower you do it the bigger your xtals will be. The xtals you get from freeze pricipitating will all be very, very small. Try this for big xtals.
1. Freeze precipitate from naptha. This will give you loads of very, very small pure white xtals.
2. Redisolve again in a the smallest amount of naptha that will disolve your spice a room temp but keep a small xtal aside to use as a seed xtal.
3. let sit for a couple of hours and drop the seed xtal in.
4. let it sit and watch your xtal grow.
5. it is important for the solvent to evaporate very slowly. You can even add a tiny bit of new solvent if it evaporates too much or have the container closed so it won't evaporate at all.
The seed crystal will attract the spice in solution to it and grow as more spice bonds with it. This is how I have grown the big stegasaurus shaped xtals before.
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