PVC is a thermoplastic, and due to its exceptional versatility, is found in an endless array of products and used for a variety of aesthetic applications. The basic raw materials for PVC are derived from salt and oil. Chlorine is manufactured by the electrolysis of sodium chloride, salt. The electrolysis of salt water produces chlorine and is then combined with ethylene that has been obtained from oil. The resulting element is ethylene dichloride, which is converted at very high temperatures to vinyl chloride monomer. These monomer molecules are polymerized forming polyvinyl chloride resin. PVC is actually difficult to ignite, and in the absence of a powerful external flame will not continue to burn.