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<p>[QUOTE=&quot;Oldhoopster, post: 5143560, member: 84179&quot;]I too have used acetone for many years on numerous coins and have never had an issue.&nbsp; Dip/soak the coin, Immediately dip in fresh solvent, immediately rinse with distilled water (although I will admit that I don&#039;t always double rinse circulated coins).&nbsp; Since you can&#039;t get Trichlorotrifluoroethane anymore, I primarily use acetone to remove PVC residue.</p><p><br /></p><p>Just an opinion, but in most cases, I don&#039;t think the dissolved residue reappearing on the coin is due from impurities in the original solvent, it is due to solvent that picked up contaminants from use.</p><p><br /></p><p>The trick with picking a solvent is understanding what you want to remove.&nbsp; Acetone is a polar solvent and works well on PVC plasticizer residue.&nbsp; Xylene is a non polar solvent and some members with chemistry backgrounds recommend this if acetone doesn&#039;t work. </p><p><br /></p><p>As always, it needs to be said that if you are not used to handling chemicals (for new collectors reading this), you should research all of the proper safety procedures.&nbsp; This stuff is very flammable, dissolve certain types of plastic containers, and do a number on your floor or countertop if you spill it.&nbsp; Think of using gasoline to clean paint brushes in your kitchen and you get the idea.[/QUOTE]</p><p><br /></p>

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