Carbide-Based PVC refers to polyvinyl chloride (PVC) produced using acetylene derived from calcium carbide as the raw material. This method is especially prevalent in regions where natural gas or petroleum, typically used in the ethylene route for PVC production, is less available or more expensive. Carbide-based PVC production involves the reaction of calcium carbide with water to produce acetylene, which is then used to produce vinyl chloride monomer (VCM) through a series of chemical reactions. This VCM is then polymerized to produce PVC. Carbide-based PVC shares many of the same properties as ethylene-based PVC, including durability, chemical resistance, and versatility. It can be used in both rigid and flexible forms for a wide range of applications, from pipes and fittings to flooring, cable insulation, and medical devices. However, the use of calcium carbide, a solid material, in the production process leads to different environmental considerations compared to the ethylene route. The production of carbide-based PVC is associated with the generation of waste products such as calcium hydroxide (slaked lime), which requires proper disposal or treatment. Additionally, the energy-intensive nature of the carbide process and the associated environmental impact have led to a preference for ethylene-based PVC in regions where natural gas is readily available. Nonetheless, carbide-based PVC remains a crucial material in areas where alternative feedstocks are economically viable, and it continues to play an essential role in the global PVC supply chain.