MDA Freebase in Air

[dr_ruthenium]

When 2x distilled MDA freebase is exposed to air it forms a solid.  Does anyone know what it is?  Is it a salt?  Is it psychoactive?

[raffike]

MDA carbonate it should be.Or some polymerized goo.If it's a salt it should be active..

[Bandil]

Yes, it is most definately the carbonate salt, and it is quite psychoactive!

[dr_ruthenium]

Cool,SWIDR thought it might be carbonate (or even nitrate) salt.  Thanks.  Bioassy pending.

[wolfx]

I think I have seen the same happening with MDMA. After some time, the freebase becomes a kind of opaque white solid substance. Is is the carbonate ? If so, how to convert it back to the freebase ?

[Rhodium]

Most liquid freebase amines form carbonates to some extent if left unprotected from atmospheric carbon dioxide. You can regenerate the pure freebase either by acid/base extraction or vacuum distillation.

[wolfx]

If converting your ( DISTILATED ) freebase ( MDA or MDMA ) to the HCl salt, do not add concentrated HCl directly to your freebase. I think Chromic has already warned against this. It works whithout problem though on UNDISTILATED freebase.

[dr_ruthenium]

If carbonate is psychoactive and stable, then why convert back to freebase?

[Rhodium]

wolfx: What you just said makes no sense. What is true is that you cannot precipitate the HCl salt of MDMA simply by adding concentrated hydrochloric acid to it - the salt will just dissolve in the water. Use a dilute solution of the freebase in a suitable solvent, then add dry HCl as an alcoholic solution or even better dissolved in ether. You can also gas the freebase solution with anhydrous HCl gas.

dr_ruthenium: The carbonate is not stable, it may easily revert back into the freebase in case the CO₂ evaporates (due to heat for example).