1,1-Dichloro-2,2-difluoroethylene
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Names | |||
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IUPAC names
1,1-Dichloro-2,2-difluoroethene
(Z)-1,2-Dichloro-1,2-difluoroethene (E)-1,2-Dichloro-1,2-difluoroethene | |||
Identifiers | |||
3D model (
JSmol)
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ChemSpider | |||
ECHA InfoCard | 100.001.090 | ||
PubChem
CID
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UNII | |||
CompTox Dashboard (
EPA)
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Properties | |||
C2Cl2F2 | |||
Molar mass | 132.92 g·mol−1 | ||
-60.0·10−6 cm3/mol | |||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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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 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.
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.
1,1-Dichloro-2,2-difluoroethylene
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| |||
Names | |||
---|---|---|---|
IUPAC names
1,1-Dichloro-2,2-difluoroethene
(Z)-1,2-Dichloro-1,2-difluoroethene (E)-1,2-Dichloro-1,2-difluoroethene | |||
Identifiers | |||
3D model (
JSmol)
|
|||
ChemSpider | |||
ECHA InfoCard | 100.001.090 | ||
PubChem
CID
|
|||
UNII | |||
CompTox Dashboard (
EPA)
|
|||
| |||
| |||
Properties | |||
C2Cl2F2 | |||
Molar mass | 132.92 g·mol−1 | ||
-60.0·10−6 cm3/mol | |||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
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 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.
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.