Dichlorodifluoroethylene

Dichlorodifluoroethylene (DDE) is a type of chemical compound that belongs to the family of organochlorides. It is a colorless gas with a faint ethereal odor. Dichlorodifluoroethylene is used in a variety of applications, including as a refrigerant, in fire extinguishing systems, and in the production of polyvinylidene fluoride (PVDF).

Chemical Properties

Dichlorodifluoroethylene has the chemical formula C2Cl2F2. It is a non-polar molecule, with a boiling point of -29.8°C and a melting point of -122.4°C. The compound is stable under normal conditions, but it can react with strong oxidizing agents, causing a fire or explosion.

Uses

Dichlorodifluoroethylene is primarily used in the production of polyvinylidene fluoride (PVDF), a highly non-reactive and pure thermoplastic fluoropolymer. PVDF is used in applications where high purity, resistance to solvents, acids, and hydrocarbons are required.

In addition, Dichlorodifluoroethylene is used as a refrigerant in air conditioning systems, in fire extinguishing systems, and as a propellant for aerosols.

Health Effects

Exposure to Dichlorodifluoroethylene can cause irritation to the eyes, skin, and respiratory tract. In high concentrations, it can cause dizziness, nausea, and loss of consciousness. Long-term exposure can lead to liver and kidney damage.

Environmental Impact

Dichlorodifluoroethylene is a persistent organic pollutant, meaning it does not readily break down in the environment. It can accumulate in the food chain, leading to potential health risks for humans and wildlife.

See Also

• Organochloride
• Polyvinylidene fluoride
• Persistent organic pollutant