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<p>[QUOTE=&quot;Coinchemistry 2012, post: 2151909, member: 28107&quot;]The time it takes can vary depending on the extent of film, but unlike dipping, leaving it too long isn&#039;t going to ruin the coin.&nbsp; Rather, if the acetone becomes heavily saturated with PVC and the like, sometimes the film can be redeposited on the coin.&nbsp; For coins with heavy PVC, I recommend changing the acetone to avoid this.&nbsp; Also be sure to use a glass container; the acetone will melt plastic.&nbsp; You should also cover the top to keep the acetone from evaporating out.&nbsp; It will evaporate quickly and if it does, it will redeposit all of the junk that was on the coin.&nbsp; I always rinse off chemicals using distilled water, but acetone is fairly inert and will quickly evaporate off the surface of the coin itself without incident.&nbsp; Always use acetone in a well ventilated area.[/QUOTE]</p><p><br /></p>

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