1,1-Difluoroethylene
 | |
| Names | |
|---|---|
| IUPAC name
1,1-Difluoroethene | |
| Other names
Difluoro-1,1-ethylene; R-1132a; Halocarbon 1132 A; Freon 1132A; Vinylidene difluoride; Vinylidene fluoride[1] | |
| Identifiers | |
75-38-7  | |
| 3D model (Jmol) | Interactive image |
| Abbreviations | VDF |
| ChemSpider | 13836545 |
| ECHA InfoCard | 100.000.789 |
| |
| |
| Properties | |
| C2H2F2 | |
| Molar mass | 64.03 g·mol−1 |
| Appearance | Colorless gas[2] |
| Odor | Slightly ethereal[1] |
| Density | 2.89 kg/m3 (vapor, 0 °C)[2] 1.122 g/mL (liquid, -84 °C)[2] |
| Melting point | −144 °C (−227 °F; 129 K)[2] |
| Boiling point | −84 °C (−119 °F; 189 K)[2] |
| 0.254 g/L[3] | |
| Vapor pressure | 35.2 atm (20°C)[4] |
| Hazards | |
| Main hazards | Flammable[4] |
| 380 °C (716 °F; 653 K)[1] | |
| Explosive limits | 5.5%-21.3%[4] |
| US health exposure limits (NIOSH): | |
| PEL (Permissible) |
none[4] |
| REL (Recommended) |
TWA 1 ppm C 5 ppm[4] |
| IDLH (Immediate danger) |
N.D.[4] |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
1,1-Difluoroethylene is a hydrofluoroolefin. Global production in 1999 was approximately 33,000 metric tons.[3] It is primarily used in the production of fluoropolymers such as polyvinylidene fluoride.
References
- 1 2 3 "Difluoro-1,1-ethylene". Gas Encyclopaedia. Air Liquide.
- 1 2 3 4 5 Record in the GESTIS Substance Database of the IFA
- 1 2 "1,1'-Difluoroethylene (VDF,VF2)" (PDF). International Programme on Chemical Safety.
- 1 2 3 4 5 6 "NIOSH Pocket Guide to Chemical Hazards #0662". National Institute for Occupational Safety and Health (NIOSH).
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