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Red oily precipitate from spent naphtha?

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Rising Star
After freeze-precipitating my last pull with naphtha, I saved the solvent in a jar for re-use in the next extraction.

I forgot about it and when I found it weeks later, there was a red / reddish orange precipitate at the bottom of the jar.

Any idea what it is? Could it be the jungle alkaloids, which the naphtha pulled, but the freeze precipitation didn't retrieve?


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