Originally posted by LSD25
See, now I expect I qualify![:P](./images/smilies/tongue.gif)
I have actually reacted povidone with polyphosphoric/metaphosphoric acid (I actually did this with Povidone-Iodine*), giving a muddy-brown precipate
and a clear solution when some water was added. Now, as the brown precipate did not appear to hold the iodine that was also in the mix, would this be
the acetaldehyde-derived tar of which you speak?
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