downwardsfromzero
Boundary condition
I raised the example of dissociation of the tribasic mescaline citrate as a potential outcome in the titrated aliquots experiment that I outlined. If freebase mescaline in EA were to be mixed with one third of its molar equivalent of citric acid and the solvent then be allowed to evaporate a solid that is theoretically the tribasic citrate would be produced. I would predict that washing the resulting solid(? - see below) with fresh EA would result in mescaline freebase being washed out of the solid material, especially perhaps if the solvent was a bit damp.Loveall said:Then we would see the pH paper turning green I guess.
Update: There was no pH change in fresh EA after 12 hours of magnetic stirring. Whatever salt is forming doesn't change and is inert in EA once it crashes, which makes sense.
The water pH in water as mentioned before is 3.55, so it is likely the product is a hydrogen salt, 62% to 81% less potent than MescalineHCl depending on if it is the dihydrogen or hydrogen form respectively (the old naive assumption was that we had mescaline citrate fully reacted which would have been 90% as strong as MescalineHCl).
A similar question is whether dibasic mescaline citrate behaves similarly. The outcomes of these two experiments would help us to home in on the stoichiometry. And a 3:2 ratio of mescaline to citric acid subjected to the same regimen would, hopefully, act to bolster the evidence.
This make me think the stoichiometry could be a factor behind the necessary loading of citric acid required for the crystals to start forming. Trimescaline citrate and/or/mixed with bimescaline citrate could possibly be room temperature liquid eutectics or something similar. This potentially renders one or both of them soluble in the EA [This figures, in my view, because the material is proportionally mostly mescaline, if that makes sense]. Thus, precipitation only starts once sufficient citric acid is present in the solution at a ratio in considerable excess of one mole of citric acid per two moles of mescaline, up to at least a one to one ratio - and, as has been found, more if a higher level of plant impurities is present.