1-Butyne

  • But-1- in
  • Ethylacetylene

Colorless gas with a smell acetylenähnlichem

Gaseous

  • 0.67 g · cm -3 (liquid phase at the boiling point )
  • 2.34 g · l-1 (gas, 15 ° C, 1000 hPa )

-125.73 ° C

8.07 ° C

1581 hPa (20 ° C)

  • Practically insoluble in water
  • Soluble in ethanol and diethyl ether

Risk

165.2 kJ / mol

Template: Infobox chemical / molecular formula search available

1-butyne is a hydrocarbon selected from the homologous series of alkynes and isomeric with 2 -butyne.

Production and representation

1-butyne can be gained (eg bromoethane ) by reaction of ethyne with a halogen Ethan.

Properties

1-butyne is a highly flammable gas which forms explosive mixtures with air or oxygen over a wide concentration range. Due to its triple bond is 1-butyne very reactive. So it adds willingly halogens. In higher concentrations of 1-butyne acting narcotic.

It has a critical temperature of 190.6 ° C, a critical pressure of 48.6 bar, a critical density of 0.245 kg / l and a triple point temperature of -125.7 ° C.

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