My take on chemicals especially solvents might be a bit paranoid and oberkill but I do have the time to do so so I do:
I tend to clean up the solvents I get from the home depot by freezing out stuff (you wont believe how much somethimes comes from a solvent thats says its very pure on the packaging), distilling and making anhydrous. Also you can use various tests to verify when you first work woth a supplier or a chemical you havent used yet.
Same idea is behind me only working with gaseous muriatic acid, cant cary much junk along.
I usually would recommend doing so, altho I guess no one but me does.
May I suspect something in the A/B process went terribly wrong because honestly, if there is no product (at all) left after evaporation, it probably was mever present at all or not in the right (base / salt) form at the right time. No matter how "bad" your solvent is, as long it has the desired polarity and the solvent you want it should at least pull something if possible.
The crystals you got in later tries sound good but please verify they are the desired product and not something scary, and it shouldnt burn, it should melt, and evaporate
The Bavarians are an uncouth but sociable folk, they would prefer have wood hacked on them rather than be brought to a state of rebellion; but if you should seize or spoil their beer, they will revolt more wildly than any other folk.
QUESTION: What common materials are soluble in acetone?
ANSWER: Styrofoam