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<p>[QUOTE=&quot;Publius2, post: 8180750, member: 105571&quot;]Use glass and if the lid has a plastic or any kind of elastomer seal, remove it before using it or test it against the acetone.&nbsp; Anything other than glass or say SS, the acetone can dissolve parts of the material and put it into solution with your coin.&nbsp; Bad juju!</p><p><br /></p><p>Do not add water or any other material to the acetone.</p><p><br /></p><p>Soak coin for desired time, throw acetone away safely.&nbsp; Soak coin again in fresh acetone, throw acetone away safely.&nbsp; Repeat as needed and for durations as needed.&nbsp; Note that acetone will not dissolve all inorganic and organic residues.&nbsp; Some are chemically inert to acetone.&nbsp; But often those deposits will respond to xylene, which is also available at your hardware store.&nbsp; When cleaning process is complete, rinse coin thoroughly in distilled water ($1/gallon at grocery store) several times and then dab dry with a clean cloth, preferably lint- and dye-free.</p><p><br /></p><p>Also, I strongly doubt that your nail polish remover is 100% acetone.&nbsp; Even hardware store acetone that is most definitely not intended for human contact is not lab-grade 100% acetone although it&#039;s far better than nail polish remover.&nbsp; A quart of acetone at the hardware store is pretty cheap. </p><p><br /></p><p>Always be safe.&nbsp; Acetone and xylene are highly volatile and flammable and are injurious to the environment.&nbsp; The safest, non-industrial, disposal method is to pour out on concrete drive or sidewalk and allow to evaporate or put in shallow pan outside to evaporate.[/QUOTE]</p><p><br /></p>

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