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<p>[QUOTE=&quot;Just Carl, post: 215277, member: 4552&quot;]True it would be a good idea to try the evaporation test prior to use on a coin. </p><p>Not sure of on line anything being pure. I only know that in my area there are companies or organizations where you can buy just about anything. And many are not supposed to be sold either. You may want to check on line for chemical supply houses in your area. Of course if you are in a school or know someone in a school that has a well equiped chem lab they could or should be able to get you some. From my experiments I would only consider Acetone in a glass container. So far my test of Walmart Acetone in the paint department is in a can and unless you know someone in the canning buisness that can tell you the construction of those cans I would avoid that except for painting projects. </p><p>&nbsp;&nbsp; As to the questions from 900fine. Note you obviously did not read my results of leaving Copper coins in Acetone for many, many days. Being a chemist I did make one drastic error that no true chemist should make. I did not document the exact amount of time of submersion, temperatures, available lighting at all times. However, the intent was just to see what true results there are in long term submersion of Copper coins in PURE Acetone. </p><p>As to other questions. No Acetone should be avoided for cleaning coins due to to many unknown results of the purity of the substance. And basically from what I&#039;ve seen it would be very difficult to detect cleaning in Acetone at least on Copper coins. Next I&#039;ll try Silver and Nickel coins. </p><p>Do all dogs have black lips? I&#039;ll start checking that also.[/QUOTE]</p><p><br /></p>

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