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<p>[QUOTE=&quot;-jeffB, post: 1352715, member: 27832&quot;]Man, I&#039;m glad this thread came back up.</p><p><br /></p><p>BadThad, I&#039;ve <i>gotta</i> get around to ordering up a bottle of VerdiCare. I&#039;ve got a few Liberty nickels and IHCs that look quite nice, but really want a bit of conservation.</p><p><br /></p><p>I finally found a copy of Coin Chemistry at the last local show, and I&#039;m gobbling it up. Not sure I agree with everything it contains, but it&#039;s got detailed quantitative info that answers some of my long-standing questions.</p><p><br /></p><p>There&#039;s a lot of talk about &quot;oil&quot; in this thread, but only one post (from BadThad, no surprise) differentiates between hydrocarbons (mineral oil, naphtha, butane, etc.) and triglycerides (olive oil, skin grease, etc.). Both kinds of &quot;oil&quot; burn, dissolve organics, feel oily, and fail to mix with water. But they&#039;re vastly different chemicals. I can&#039;t imagine how hydrocarbons would interact with copper or silver under ordinary conditions -- you can keep sodium, potassium, or <i>cesium</i> under them with no reaction! -- but triglycerides (vegetable oils, animal fat) are another story entirely, more so because of the free fatty acids and other stuff that they usually contain.</p><p><br /></p><p>Maybe someday there&#039;ll be a &quot;coin chemistry&quot; subforum, and it&#039;ll keep me out of everybody&#039;s hair. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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