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<p>[QUOTE=&quot;TheMont, post: 2616342, member: 80121&quot;]I&#039;ll quote- from Wikipedia:</p><p><b>Polyvinyl chloride</b> (<a href="https://en.wikipedia.org/wiki/Help:IPA_for_English" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Help:IPA_for_English" rel="nofollow">/ˌpɑːlivaɪnəl ˈklɔːraɪd/</a>),<a href="https://en.wikipedia.org/wiki/Polyvinyl_chloride#cite_note-4" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Polyvinyl_chloride#cite_note-4" rel="nofollow">[4]</a> more correctly but unusually poly(vinyl chloride), commonly abbreviated <b>PVC</b>, is the world&#039;s third-most widely produced synthetic <a href="https://en.wikipedia.org/wiki/Plastic" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Plastic" rel="nofollow">plastic</a> <a href="https://en.wikipedia.org/wiki/Polymer" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Polymer" rel="nofollow">polymer</a>, after <a href="https://en.wikipedia.org/wiki/Polyethylene" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Polyethylene" rel="nofollow">polyethylene</a> and <a href="https://en.wikipedia.org/wiki/Polypropylene" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Polypropylene" rel="nofollow">polypropylene</a>.<a href="https://en.wikipedia.org/wiki/Polyvinyl_chloride#cite_note-ullmannPVC-5" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Polyvinyl_chloride#cite_note-ullmannPVC-5" rel="nofollow">[5]</a></p><p>PVC comes in two basic forms: rigid (sometimes abbreviated as RPVC) and flexible. The rigid form of PVC is used in <a href="https://en.wikipedia.org/wiki/Construction" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Construction" rel="nofollow">construction</a> for pipe and in profile applications such as doors and windows. It is also used for bottles, other non-food packaging, and cards (such as bank or membership cards). It can be made softer and more flexible by the addition of <a href="https://en.wikipedia.org/wiki/Plasticizer" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Plasticizer" rel="nofollow">plasticizers</a>, the most widely used being <a href="https://en.wikipedia.org/wiki/Phthalates" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Phthalates" rel="nofollow">phthalates</a>. In this form, it is also used in plumbing, electrical cable insulation, imitation leather, signage, inflatable products, and many applications where it replaces rubber.<a href="https://en.wikipedia.org/wiki/Polyvinyl_chloride#cite_note-6" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Polyvinyl_chloride#cite_note-6" rel="nofollow">[6]</a></p><p>Pure poly(vinyl chloride) is a white, brittle solid. It is insoluble in alcohol but slightly soluble in <a href="https://en.wikipedia.org/wiki/Tetrahydrofuran" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Tetrahydrofuran" rel="nofollow">tetrahydrofuran</a>.</p><p><br /></p><p>I don&#039;t see hydrochloric acid mentioned and I don&#039;t think it would be appropriate in the uses listed above, if it was present.[/QUOTE]</p><p><br /></p>

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