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.[3] 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:[5]

Preparation of 1,1-difluoroethylene from 1-chloro-1,1-difluoroethane

or loss of hydrogen fluoride from 1,1,1-trifluoroethane:[6]

Preparation of 1,1-difluoroethylene from 1,1,1-trifluoroethane

See also

References

  1. ^ a b c "Difluoro-1,1-ethylene". Gas Encyclopaedia. Air Liquide. Archived from the original on 2016-03-03. Retrieved 2012-04-23.
  2. ^ a b c d e Record in the GESTIS Substance Database of the Institute for Occupational Safety and Health
  3. ^ a b "1,1'-Difluoroethylene (VDF,VF2)" (PDF). International Programme on Chemical Safety. Archived from the original (PDF) on 2012-01-04. Retrieved 2012-04-23.
  4. ^ a b c d e f NIOSH Pocket Guide to Chemical Hazards. "#0662". National Institute for Occupational Safety and Health (NIOSH).
  5. ^ Kirk-Othmer Encyclopedia of Chemical Technology (4 ed.). John Wiley and Sons. 1994. pp. V11. Retrieved 8 July 2017.
  6. ^ Siegemund, Günter; Schwertfeger, Werner; Feiring, Andrew; Smart, Bruce; Behr, Fred; Vogel, Herward; McKusick, Blaine (2000). "Fluorine Compounds, Organic". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a11_349. ISBN 978-3-527-30385-4.
Allikas: Https://en.wikipedia.org/wiki/Vinylidene_fluoride
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