If it may look as a stupid question for you, I'm sorry, but my knowledge is limited.
Let's take any amine - amphetamine, methamphetamine or mdma their salted form. Hydrochloride for example.
Is such salt being dissolved in water stable or not?
For example, is their any evidence meth hcl is...
Ephedrine Hydrochloride Synthesis Via NaBH4 From Ephedrone Hydrochloride
https://bbgate.com/threads/synthesis-of-ephedrine-hydrochloride-and-chemical-analysis.9537/
Normally I crystallize "stuff" in oversaturated water solution, and crystallization takes around 48 hours. I allways control exact weight of "stuff", solution and water. It means, when crystals are ready, final yeld, including the yeld from water leftovers fits with initial "stuff" weight minus...