Vinyl Chloride Monomer (VCM) is the main chemical precursor to polyvinyl chloride. It is produced by mixing hydrocarbon feedstock, especially ethylene acquired by cracking petroleum or natural gas with elemental chlorine. Vinyl chloride monomer is basically a flammable, colorless gas at room temperature. It is widely used to produce polyvinyl chloride, which is a lightweight, durable, and a non-flammable plastic. It is also popularly known as chloroethylene, or chloroethene by users. When concentrated at approximate 3.6% in air, vinyl chloride monomer can also be an explosive hazard. VDM is mostly preserved as a liquid under force. The liquid evaporates in no time at ambient temperatures. On the other hand, at higher temperatures, vinyl chloride monomer possesses a sweet smell normally of chlorinated hydrocarbons. Their vapors are generally heavier as compared to air and are prone to sink to the low areas.