1,1-Difluoroethylene

1,1-difluoroethylene.svg 100px 1,1-Difluoroethylene.png 150px 1,1-Difluoroethene Difluoro-1,1-ethylene; R-1132a; Halocarbon 1132 A; Freon 1132A; Vinylidene difluoride; Vinylidene fluoride http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=92 Gas Encyclopaedia Difluoro-1,1-ethylene Air Liquide 2012-04-23 2016-03-03 https://web.archive.org/web/20160303233431/http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=92 dead VDF 75-38-7 correct CAS 6369 13836545 KW0560000 1959 3C1IX2905B correct FDA 200-867-7 82550 116020 C19547 C=C(F)F 1/C2H2F2/c1-2(3)4/h1H2 BQCIDUSAKPWEOX-UHFFFAOYAV 1S/C2H2F2/c1-2(3)4/h1H2 BQCIDUSAKPWEOX-UHFFFAOYSA-N 2 2 2 Colorless gas41220 Slightly ethereal 2.89 kg/m3 (vapor, 0 °C)1.122 g/mL (liquid, −84 °C) -144 -84 0.254 g/L http://www.inchem.org/documents/sids/sids/VDFF2.pdf 1,1'-Difluoroethylene (VDF, VF2) International Programme on Chemical Safety 2012-04-23 2012-01-04 https://web.archive.org/web/20120104213020/http://inchem.org/documents/sids/sids/VDFF2.pdf dead 35.2 atm (20°C) Flammable 380 none0662 5.5%-21.3% N.D. TWA 1 ppm C 5 ppm 07 Warning 315 319 335 261 264 271 280 302+352 304+340 305+351+338 312 321 332+313 337+313 362 403+233 405 501 1,2-Difluoroethylene; Fluoroethylene; Trifluoroethylene; 2-Chloro-1,1-difluoroethylene; 1,1-Difluoroethylene, also known as vinylidene fluoride, is a hydrofluoroolefin. This colorless, flammable gas is a difluorinated derivative of ethylene. Global production in 1999 was approximately 33,000 metric tons. It is primarily used in the production of fluoropolymers such as polyvinylidene fluoride and FKM. Preparation 1,1-Difluoroethylene can be prepared by elimination reaction from a 1,1,1-trihaloethane compound, for example, loss of hydrogen chloride from 1-chloro-1,1-difluoroethane:Kirk-Othmer Encyclopedia of Chemical Technology 1994 John Wiley and Sons V11 4 https://www.nlm.nih.gov/toxnet/index.html 8 July 2017 250px|Preparation of 1,1-difluoroethylene from 1-chloro-1,1-difluoroethane or loss of hydrogen fluoride from 1,1,1-trifluoroethane:10.1002/14356007.a11_349 Fluorine Compounds, Organic Ullmann's Encyclopedia of Industrial Chemistry 2000 Siegemund Günter Schwertfeger Werner Feiring Andrew Smart Bruce Behr Fred Vogel Herward McKusick Blaine 978-3-527-30385-4 250px|Preparation of 1,1-difluoroethylene from 1,1,1-trifluoroethane See also 1,2-Difluoroethylene Perfluoroisobutene References Category:Fluoroalkenes Category:Vinylidene compounds Category:Hydrofluoroolefins Category:Haloethenes