TCE

Tetrachloroethylene, also known as perchloroethylene, PCE, or tetrachloroethene, is a commonly used solvent. It is a volatile, colorless liquid that is nonflammable and has a sweet smell.

History

Tetrachloroethylene was first synthesized by Michael Faraday in 1821. He heated hexachloroethane (C2Cl6) until it decomposed into tetrachloroethylene and other chlorinated hydrocarbons.

Production

Tetrachloroethylene is produced by high temperature chlorinolysis of light hydrocarbons. The main raw materials are ethylene and chlorine.

Uses

Tetrachloroethylene is widely used for dry cleaning of fabrics and for metal-degreasing. It is also used in the manufacture of some consumer products and other chemicals.

Health effects

Exposure to tetrachloroethylene may occur through inhalation, skin contact, or ingestion. It can have several adverse effects on human health, depending on the amount and duration of exposure.

Environmental impact

Tetrachloroethylene is a persistent organic pollutant. It does not easily break down in the environment and can contaminate air, soil, and water.

See also

• Chlorinated solvents
• Dry cleaning
• Persistent organic pollutant
• Volatile organic compound

References

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