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<p>[QUOTE=&quot;BadThad, post: 25372773, member: 17261&quot;]Excellent conservation! <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" /></p><p><br /></p><p>Obviously, it&#039;s a verdigris salt formed due to copper being in the alloy. As I recall, these are ~10% Cu. Organic solvents would have no affect, verdigris salts are insoluble in acetone, xylene, etc.</p><p><br /></p><p>Acetone was worth a shot if the verdigris was plasticizer-based because, with PVC degradation, the substrate residue is actually organic and soluble in most organic solvents. However, using only an organic solvent on plasticizer damage ignores the fact there is still HCl present. After PVC residue removal, it&#039;s always best to neutralize with alkaline water.[/QUOTE]</p><p><br /></p>

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