Vinylacetylene

Vinylacetylene
Names
Preferred IUPAC name
But-1-en-3-yne
Other names
  • Butenyne, normal isomer
  • 3-Butene-1-yne
  • Vinyl acetylene
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.010.650
UNII
  • InChI=1S/C4H4/c1-3-4-2/h1,4H,2H2 Y
    Key: WFYPICNXBKQZGB-UHFFFAOYSA-N Y
  • InChI=1/C4H4/c1-3-4-2/h1,4H,2H2
    Key: WFYPICNXBKQZGB-UHFFFAOYAE
  • C#CC=C
Properties
H2C=CH−C≡CH
Molar mass 52.07456 g/mol
Appearance colourless gas
Boiling point 0 to 6 °C (32 to 43 °F; 273 to 279 K)
low
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Very flammable. Extremely dangerous because it can explode, even without air.
NFPA 704 (fire diamond)
2
4
3
W
Flash point < −5 °C (23 °F; 268 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

Vinylacetylene is the organic compound with the formula C4H4 or H2C=CH−C≡CH. The colourless gas was once used in the polymer industry. It is composed of both alkyne and alkene groups and is the simplest enyne.

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