Process, Technology, Material Safety Data Sheet, Patent, Application,
Tetrachloroethylene, also known under its systematic name
tetrachloroethene and as perchloroethylene, perchloroethene, perc, and PCE,
is a chloro carbon with the formula Cl2C=CCl2.
- It is a
colorless liquid widely used for dry cleaning of fabrics, hence it is
sometimes called "dry-cleaning fluid."
Perchloroethylene is produced domestically by three processes.
- Two of the
processes involve the chlorination and oxy chlorination of ethylene
dichloride or other chlorinated hydrocarbons having two carbon atoms.
Perchloroethylene and TCE are manufactured separately or as co products by
the chlorination oroxychlorination process with the raw material ratios
determining the proportions of PCE and TCE.
- The effects
of tetrachloroethylene on human health come from cases of accidental or
exposures primarily affect the central nervous system although liver and
kidney effects have also been reported.
tetrachloroethylene is consumed as a solvent used in dry cleaning.
- It is
desirable because it dissolves many organic materials, it is volatile,
highly stable, and nonflammable.
- Usually as
a mixture with other chlorocarbons, it is also used to degrease metal
parts in the automotive and other metalworking industries.
- It appears
in a few consumer products including paint strippers and spot removers.
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