lysurgeon
Rising Star
A good old FOAF was doing a mimosa extraction and took several days in the process, on account of the large amount that he was working with. The first batch was allowed to sit overnight in the refrigerator prior to basification and napthafication as an alternative to filtration, and upon freeze precipitation yielded white crystals. The second batch was not allowed to sit in the fridge very long, and he says the naptha turned yellow from these batches and upon freeze precip yielded yellow crystals. He asked me to figure it out, and I theorize that due to the lack of proper separation of mhrb particles from the acidic solution prior to basification and nonpolar extraction, plant oils not extracted with acid/water came into contact with his solvent layer and thus imparted yellow coloration. He didn't tell me about any other variables that may have occurred between the two extractions, such as temperature, a/b ratios, etc. which may have also had an influence on the outcomes. Is this likely to be correct? And if so, does anyone have any technical advice I could tell him regarding purification and a hopeful return to snowy whiteness?
