1,1-Dichloroethene
From Wikipedia, the free encyclopedia
| 1,1-Dichloroethene | |
|---|---|
 |
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| IUPAC name | 1,1-Dichloroethene |
| Other names | 1,1-Dichloroethylene 1,1-DCE vinylidene chloride vinylidene dichloride |
| Identifiers | |
| CAS number | [75-35-4] |
| SMILES | ClC(Cl)=C |
| Properties | |
| 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 |
| Hazards | |
| NFPA 704 |
 4
2
2
|
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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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.
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.
