It is interesting that precipitation occurs - this is something I haven't seen with FASI and limonene. But bear in mind that everyone is using a different source of limo, fumaric acid and isopropanol -granted, they should behave the same but who knows in practice when you mix all that stuff together?
It is always advised that people do this small test of adding some FASI to limo to see whether precipitation occurs before they go on salting their pulls.
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