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<p>[QUOTE=&quot;Conder101, post: 3577098, member: 66&quot;]PVC is a type of plastic (polyvinyl chloride), it does not get released from the pages.&nbsp; If the pages are PVC it contains a plasticizer to make the plastic soft and flexible.&nbsp; It is this plasticizer that leaches out of the plastic and forms the oily residue on the coins.&nbsp; It leaches out as a liquid not a gas.&nbsp; What causes the damage is as PVC ages it does outgas, it outgasses HCl hydrogen chloride.&nbsp; The plasticizer absorbs the HCl.&nbsp; It also absorbs water vapor from the air.&nbsp; When the water and HCl combine it creates Hydrochloric acid.&nbsp; That acid, in the plasticizer, reacts with the metal in the coin.&nbsp; When it reacts with copper in the alloy it creates copper chloride which give the &quot;PVC residue&quot; the green color.[/QUOTE]</p><p><br /></p>

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