Vinyl chloride monomer (VCM) is a colorless gas that is used in the production of polyvinyl chloride (PVC), a widely used plastic material. VCM is primarily used in the production of PVC, which is used in a wide range of applications such as pipes, flooring, and window frames. PVC is a durable and versatile material that can be manufactured in a variety of forms, including rigid and flexible forms. VCM is produced through the reaction of ethylene with chlorine in the presence of a catalyst. The resulting VCM is purified through a distillation process to remove impurities and achieve the desired purity.