Vinyl fluoride

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Vinyl fluoride
Vinylfluoride.svg
Identifiers
CAS number 75-02-5 YesY
PubChem 6339
ChemSpider 6099 YesY
EC number 200-832-6
KEGG C19185 YesY
ChEBI CHEBI:51314 YesY
RTECS number YZ7351000
Jmol-3D images Image 1
Properties
Molecular formula C2H3F
Molar mass 46.04 g/mol
Appearance Colorless gas with a faint, ethereal odor
Density 0.636 g/cm3
Melting point -160.5 °C (-257 °F)
Boiling point -72.2 °C (-98 °F)
Solubility in water Slightly soluble
Vapor pressure 25 500 kPa
Hazards
EU classification Extremely flammable (F+)
R-phrases R12
S-phrases S9, S16, S33
NFPA 704
Flammability code 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g., propane Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g., phosphorus Special hazards (white): no codeNFPA 704 four-colored diamond
Autoignition temperature 385 °C
Explosive limits 2.6 - 21.7 %
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Vinyl fluoride is an organic halide with the chemical formula C2H3F. It is a colorless gas with a faint etherlike odor. It is used as the monomeric precursor to the fluoropolymer polyvinylfluoride.

Production[edit]

It was first prepared in 1901 by Frédéric Swarts, the Belgian chemist who was the first to prepare CFCs in 1892. Swarts used the reaction of zinc with 1,1-difluoro-2-bromoethane. It is produced industrially by two routes, one being the mercury-catalyzed reaction of acetylene and hydrogen fluoride:[1]

HCCH + HF → CH2=CHF

It is also prepared from 1,1-chlorofluoroethane:

CH3CHClF → CH2=CHF + HCl

Safety[edit]

Vinyl fluoride is classified as an IARC Group 2A carcinogen (likely to cause cancer in humans).

Additional data[edit]

Its critical point is at 54.8 °C (328 K) and 5.24 MPa. Molecular dipole moment is 1.4 Debye and heat of vaporization is 361 kJ/kg.

See also[edit]

References[edit]

  1. ^ Günter Siegemund, Werner Schwertfeger, Andrew Feiring, Bruce Smart, Fred Behr, Herward Vogel, Blaine McKusick “Fluorine Compounds, Organic” Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2002. doi:10.1002/14356007.a11_349

External links[edit]