cis-1,2-Dichloroethene (left) and trans-1,2-Dichloroethene (right)
IUPAC name	1,2-Dichloroethene
Other names	1,2-Dichloroethylene 1,2-DCE
Identifiers
CAS number	156-59-2 Y,(cis) trans: [156-60-5] mix: [540-59-0]
SMILES	Cl[C@H]=CCl
InChI	1/C2H2Cl2/c3-1-2-4/h1-2H/b2-1-
InChI key	KFUSEUYYWQURPO-UPHRSURJBI
ChemSpider ID	558928
Properties
Molecular formula	C2H2Cl2
Molar mass	96.95 g/mol
Density	cis: 1.28 g/cm³ trans: 1.26 g/cm³
Melting point	cis: -81 °C trans: -81 °C
Boiling point	cis: 60.3 °C trans: 47.5 °C
Dipole moment	cis: 1.9 D trans: 0 D
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

1,2-Dichloroethene, commonly called 1,2-dichloroethylene or 1,2-DCE, is an organochloride with the molecular formula C₂H₂Cl₂. It is a highly flammable, colorless liquid with a sharp, harsh odor. It can exist as either of two geometric isomers, cis-1,2-dichloroethene or trans-1,2-dichloroethene, but is often used as a mixture of the two. It is minimally soluble (5090 mg/L for the cis-isomer^[1]) in water, and soluble in ethanol, diethyl ether, acetone, benzene, and chloroform.

1,2-DCE is used as a solvent for waxes, resins, polymers, fats, and lacquers. It is also used as an intermediate in the preparation of other chlorinated solvents.

The major health effect of inhalation of vapors of 1,2-DCE is narcosis; it has been used in a combination with diethyl ether as an anesthetic. In high concentrations, exposure to 1,2-DCE causes central nervous system depression; in milder exposures, it can produce nausea, vomiting, weakness, tremor, epigastric cramps, burning of the eyes and vertigo.

[edit] See also

• 1,1-Dichloroethene
• 1,2-Dichloroethane

[edit] References

1. ^ Schwarzenbach et al. (2003) Environmental Organic Chemistry, Pub. Wiley Interscience

[edit] External links

• International Chemical Safety Card 0436
• NIOSH Pocket Guide to Chemical Hazards 0195