1-Butyne
Full displayed formula
Space-filling model
Names
Preferred IUPAC name
But-1-yne
Other names
Ethylacetylene
Ethylethyne, UN 2452
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.003.139
EC Number
  • 203-451-3
UNII
UN number 2452
  • InChI=1S/C4H6/c1-3-4-2/h1H,4H2,2H3 checkY
    Key: KDKYADYSIPSCCQ-UHFFFAOYSA-N checkY
  • InChI=1/C4H6/c1-3-4-2/h1H,4H2,2H3
    Key: KDKYADYSIPSCCQ-UHFFFAOYAI
  • C#CCC
Properties[1]
C4H6
Molar mass 54.091 g/mol
Density 0.6783 g cm−3[1]
Melting point −125.7 °C (−194.3 °F; 147.5 K)[1]
Boiling point 8.08 °C (46.54 °F; 281.23 K)[1]
Hazards
GHS labelling:
GHS02: FlammableGHS04: Compressed Gas
Danger
H220, H280
P210, P377, P381, P403
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

1-Butyne is an organic compound with the formula CH3CH2C≡CH. It is a terminal alkyne. The compound is a common terminal alkyne substrate in diverse studies of catalysis. It is a colorless combustible gas.[1]

1-Butyne participates in reactions typical for terminal alkynes, such as alkyne metathesis,[2] hydrogenation, condensation with formaldehyde. Based on its heat of combustion, it is slightly more stable than its isomer 2-butyne.[3]

See also

References

  1. 1 2 3 4 5 Lide, David R. (2008). CRC Handbook of Chemistry and Physics, 89th Edition. CRC Press. pp. 3–84. ISBN 978-0-8493-0488-0.
  2. Zhang, Wei; Kraft, Stefan; Moore, Jeffrey S. (2004). "Highly Active Trialkoxymolybdenum(VI) Alkylidyne Catalysts Synthesized by a Reductive Recycle Strategy". Journal of the American Chemical Society. 126 (1): 329–335. doi:10.1021/ja0379868. PMID 14709099.
  3. Prosen, E.J.; Maron, F.W.; Rossini, F.D. (1951). "Heats of combustion, formation, and insomerization of ten C4 hydrocarbons". Journal of Research of the National Bureau of Standards. 46 (2): 106. doi:10.6028/jres.046.015.
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