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<p>[QUOTE=&quot;desertgem, post: 870732, member: 15199&quot;]If PVC released chlorides as you describe, PVC pipes could not be used to carry water and even harsh chemical sewage, as it would breakdown. This does not happen with the opaque hard plastic pvc pipes. Now for flexibility and transparency, plasticizers such as&nbsp;&nbsp; phthalates &nbsp; are added to allow the PVC molecules to slide over each other. This is the substance that can leach out of plasticized PVC, and produces the &quot;vinyl shower curtain&quot; smell. In very&nbsp; old PVC coin flips, the plasticizers are mainly gone, and the plastic becomes brittle, and would have very low probability of initiating verdigris.</p><p><br /></p><p>Milk containers and other plastic containers used to have high levels of plasticizers, until medical concerns of leaching developed which led to most being reformulated .</p><p><br /></p><p>Thank you for the offer of help.&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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