Dichlorodifluoroethylene
 1,1-Dichloro-2,2-difluoroethylene | |||
| |||
| Names | |||
|---|---|---|---|
| IUPAC names
1,1-Dichloro-2,2-difluoroethene (Z)-1,2-Dichloro-1,2-difluoroethene (E)-1,2-Dichloro-1,2-difluoroethene | |||
| Identifiers | |||
79-35-6  311-81-9  381-71-5 | |||
| 3D model (Jmol) | Interactive image Interactive image Interactive image | ||
| ChemSpider | 21106435 2018468 2297331 | ||
| ECHA InfoCard | 100.001.090 | ||
| PubChem | 6592 2736814 3032334 | ||
| |||
| |||
| Properties | |||
| C2Cl2F2 | |||
| Molar mass | 132.92 g·mol−1 | ||
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
| verify (what is ?) | |||
| Infobox references | |||
A dichlorodifluoroethylene (systematically named dichlorodifluoroethene) is one of three compounds with the chemical formula C
2Cl
2F
2. Dichlorodifluoroethylenes are colourless gases, and are some of the simplest chlorodifluoroalkenes.
The structural isomers are used as intermediates or precursors in the production of other industrial chemicals.[1][2]
1,1-Dichloro-2,2-difluoroethylene
1,1-Dichloro-2,2-difluoroethylene is a low-boiling liquid that is used a refrigerant.[3] It may also be used as a solvent, but has practical limitations as such, because of its low boiling point (commercial listings, 19 °C; lit. 17 °C).[4]
It is regarded as a hazardous chemical for being toxic by inhalation (see MSDS), and a low-boiling liquid, and it causes irritation when it comes into contact with the skin and mucous membranes. Its ASHRAE number is R-1112a, and its CAS number is 79-35-6. Concentrated 1,1-dichloro-2,2-difluoroethylene can be ignited with ease in the laboratory.
cis- And trans-1,2-dichloro-1,2-difluoroethylene
The diastereomers were co-isolated first in 1965, by using a combination of fractional melting and fractional distillation.[5] The cis isomer's ASHRAE number is R-1112c, and its CAS number is 311-81-9. Its melting point is −119.6 °C (−183.3 °F).[5] The trans isomer's ASHRAE number is R-1112t, and its CAS number is 381-71-5. Its melting point is −93.3 °C (−135.9 °F).[5] The diastereomers are commercially only available as a mixtures of varying proportions.
References
- ↑ http://www.buyersguidechem.com/chemical_supplier/1,1-Dichlorodifluoroethylene.php retrieved 26 December 2013
- ↑ http://www.google.nl/patents/US5118888 retrieved 26 December 2013
- ↑ http://refrigtech.com/Knowledge_Center/Toxic_Info/zsafety.html
- ↑ http://www.orgsyn.org/demo.aspx?prep=cv4p0268
- 1 2 3 Craig, Norman C.; Evans, David A. (5 October 1965). "Infrared and Raman spectra of cis- and trans-1,2-dichloro-1,2-difluoroethylene". Journal of the American Chemical Society (PDF). ACS Publications. 87 (19): 4223–4230. doi:10.1021/ja00947a001.