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<p>[QUOTE=&quot;-jeffB, post: 1763111, member: 27832&quot;]DON&#039;T DO THIS. The mixture will release chlorine gas over time, and it will trash your coins. It&#039;s a terrible, terrible idea -- it&#039;s dangerous to you, your family, and your coins.</p><p><br /></p><p>I always thought of hydrochloric (muriatic) acid as the safest of the &quot;big three&quot; mineral acids (the other two are nitric and sulfuric). But I just trashed a kitchen counter thanks to a spill that I didn&#039;t even notice at the time. Coingeek12, how do you think your parents will feel if an accident like that happens?</p><p><br /></p><p>I&#039;ll try to find the thread where someone tried adding salt to a vinegar soak for nickels. Let&#039;s just say that the results were NOT pretty -- and that mix would be far, far less aggressive than an HCl-H2O2 mix.</p><p><br /></p><p>Maybe BadThad will chime in if I&#039;m terribly off-base here, but this sounds like a disaster in the making.[/QUOTE]</p><p><br /></p>

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