11Dichloroethylene

1,1-Dichloroethylene, also known as vinylidene chloride (VDC), is an organochloride compound with the chemical formula C2H2Cl2. It is a colorless liquid with a sweet odor. 1,1-Dichloroethylene is primarily used as a monomer in the production of polymers. Its most well-known application is in the synthesis of polyvinylidene chloride (PVDC), a polymer widely recognized for its excellent barrier properties against oxygen, moisture, and odors. This makes PVDC a valuable material for food packaging films, such as Saran wrap, and for industrial coatings.

The production of 1,1-dichloroethylene typically involves the dehydrochlorination of 1,1,2-trichloroethane. It is a volatile compound and can undergo polymerization, especially in the presence of initiators or heat. Due to its reactive nature, it is often stabilized with inhibitors during storage and transportation.

In terms of health and environmental considerations, 1,1-dichloroethylene is considered a volatile organic compound (VOC). Exposure can occur through inhalation or skin contact. It is classified as a probable human carcinogen by some regulatory agencies. Environmental release can occur during manufacturing, processing, and disposal of products containing VDC-based polymers. Efforts are made to minimize emissions and ensure safe handling and disposal practices.