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<p>[QUOTE=&quot;-jeffB, post: 2649052, member: 27832&quot;]Well, first of all, the VerdiCare formula is proprietary, highly effective, and apparently a good seller, so I can&#039;t imagine [USER=17261]@BadThad[/USER] would be eager to reveal the secret! <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>Second, VerdiCare is a lot safer (for both coins and people) than a strong base or acid.</p><p><br /></p><p>Third, I&#039;m not a &quot;real&quot; chemist either, but I&#039;ve been following discussions here about this for several years. I think the key things are a <i>complexing</i> agent to solubilize and lift away the verdigris, and a <i>protective</i> agent to keep it from re-forming once it&#039;s gone. I suspect that there&#039;s a silicone compound involved for the latter part. I&#039;d expect some sort of ammonium compound for the first part.</p><p><br /></p><p>Again, though, I&#039;m happy to spend money for a product where someone <i>else</i> has done all the development and testing.[/QUOTE]</p><p><br /></p>

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