Tried an acetone wash of some of my buddis dark dark brown mda. The acetone I got was from a Chem supply company online so it was 99.5%. I added 20 ml to beaker added gram, stirs for 3 min, covered with foil for 10. Acetone turned dark brown/red color. Poured through coffee filter. Did a fee more rinses with 10ml on mda, then placed on ceramic plate to dry. Now I have a black tar substance. It does though smell like sass still??? What went wrong. It's only been about 12 hours so it is still drying, maybe it will lighten in color but I doubt it.
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