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IUPAC name 1,1-Dichloroethene
Other names 1,1-Dichloroethylene
vinylidene chloride
vinylidene dichloride
CAS number 75-35-4
Molecular formula C2H2Cl2
Molar mass 96.95 g/mol
Density 1.213 g/cm³
Melting point

-122 °C

Boiling point

32 °C

Dipole moment 2.3 D
NFPA 704
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

1,1-Dichloroethene, commonly called 1,1-dichloroethylene or 1,1-DCE, is an organochloride with the molecular formula C2H2Cl2. It is a highly flammable, colorless liquid with a sharp, harsh odor. It is insoluble in water, but soluble in ethanol, diethyl ether, acetone, benzene, and chloroform.

Additional recommended knowledge

1,1-DCE is used as a comonomer in the polymerization of vinyl chloride, acrylonitrile, and acrylates.

1,1-DCE is used in semiconductor device fabrication for growing high purity silicon dioxide (SiO2) films.

The health effects from exposure to 1,1-DCE are primarily on the central nervous system, including symptoms of sedation, inebriation, convulsions, spasms, and unconsciousness at high concentrations.[1]

As with other unsaturated carbon compounds, 1,1-DCE can be polymerised to form polyvinylidene chloride. A very widely used product, cling wrap, or Saran was made from this polymer. During the 1990s research suggested that, in common with many chlorinated carbon compounds, Saran posed a possible danger to health by leaching, especially on exposure to food in microwave ovens. Since 2004, therefore cling wrap's formulation has changed to a form of polythene.

See also


  1. ^
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "1,1-Dichloroethene". A list of authors is available in Wikipedia.
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