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<p>[QUOTE=&quot;wlwhittier, post: 3526988, member: 18320&quot;]First, Acetone, like almost every highly volatile solvent, does it&#039;s job by dissolving (and thereby absorbing) whatever the unwanted material is on the coin; waxes and oil-based soils, some deposits from out-gassing of plastics, etc. That absorbed material remains in the solvent, and as the solvent evaporates the concentration increases: the&nbsp; solvent vapor rarely carries the dissolved material away. So, if you&#039;re oh-so-gently flushing your coins and allowing an air-dry to remove the remaining solvent from the coin, you&#039;re still leaving <i>some </i>of the offending material behind, even on a very-first-use of freshly opened, previously unused solvent. If you&#039;re returning your flushing solution to the container for future use, over time the concentration of dissolved stuff can only increase...this kind of &#039;cleaning&#039; may not be damaging in the sense of physical alteration of the substrate, and may very well leave a much improved appearance to the coin...but make no mistake: it remains soiled to some measurable extent, especially as the concentration of contaminent increases.</p><p><br /></p><p>Second, <u>any</u> solvent, when coming in contact with your skin, is absorbed into the body...even water. If it&#039;s just your fingertips, well, not much gets in if quickly done...but it does enter. If, as one poster admitted doing, you&#039;re washing your hands, wrists and forearms with these other liquids, you do permanent damage to your liver, where these solvents have been detected within <i>seconds</i> of contact with the skin. Think how the flavor of oysters fills the mouth almost instantly after rubbing DiMethyl Sulfoxide (DMSO) on an aching joint. You&#039;re not immune to the effects of this kind of corporeal neglect...it all adds up, down the road, and in some industries many of these liquids require near-HazMat protection for workers. Read the MSDS sheets for the common ones...that&#039;ll give you a whiff of grapeshot that just might add years to your life.</p><p><br /></p><p>Thanks for listening!&nbsp; wlw[/QUOTE]</p><p><br /></p>

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