I've been working on this approach (but skipping the acid part) and can't get it to work well/reliably with acetone. Mainly, crashing from acetone has been hard for me (tried sulfuric, HCl, and various organic acids including fumaric, malic, and citric). This includes both air-dry and chemical dry with MgSO4 of the basic cacti paste. It also includes wet paste with 50% NaOH to keep the acetone dry, and drying the acetone after the pull with MgSO4 and/or NaOH. After poor salting results (only got some small amounts of product here and there), acetone evap and A/B recovered the bulk of the product from the acetone. I understand it is possible to get salts from acetone (e.g., dg's sulfuric Tek from water/acetone), but that is from a concentrated and clean starting point. As doubledog has pointed out it is not so easy when closer to the plant and on dilute conditions.
If I use limonene indead of acetone, then crashing with FASI works well and effortlessly. Also, don't need to dry the cacti paste completely. Instead, I find it more practical to have a slightly wet paste, making limomene and water/cacti separation trivial (just pour off). I let the limomene settle for over MgSO4 until it becomes clear (after pulling it can be cloudy), and decant that into a salting jar for FASI salting.
This is nothing new. It is just 69ron's limomene Tek with ACY's microwave assistance added (which makes it easy to get a good paste consistency), and FASI salting (mentioned by for example
narmz). It all works great together 🙂
The process I like is (again, these are all other people's ideas, not mine),
- Microwave cacti powder/water/Ca(OH)2 to a smooth paste. Add NaCl (optional), pull with limonene, and rest over over MgSO4 until clear. Decant clear limonene and salt with FASI slowly. Recover salts and wash with dry acetone to remove limonene. For a more crystalline product dissolve salts in hot water and allow to evaporate slowly. At this time product tends to be a little pink/salmon, more acetone washes can whiten it up if desired.
If anyone is interested I can write this up with more details/pictures. There is no layer separation, no possibility of emulsions, and no cacti filtering. Cooking is limoter to a few minutes in the microwave. Yields seem good to me. The limonene can be washed with water and reused.
I think the limomene/FASI salting should be added to the wiki as a mescaline Tek too (I can't find it there). Perhaps as an update to 69ron's limonene tek. If starting with fresh cacti, I imagine that simply blending with Ca(OH)2 and microwaving to get to the paste would work.
Disclaimer: These are just my personal preferences and observations at the moment. I'm not claiming this process is better than others which also work well. Again, none of these ideas are mine, but I wanted to summarize/conclude several work threads on what I have personally settled on as practical and easy.
Cheers.