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Simplified skeletal formula
Full displayed formula
Space-filling model
CAS number 107-00-6 YesY
ChemSpider 7558 YesY
ChEBI CHEBI:48087 YesY
Jmol-3D images Image 1
Molecular formula C4H6
Molar mass 54.091 g/mol
Density 0.6783 g cm−3[1]
Melting point −125.7 °C[1]
Boiling point 8.08 °C[1]
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

1-Butyne, also known as Ethylacetylene, but-1-yne, ethylethyne, and UN 2452, is an extremely flammable and reactive alkyne with chemical formula C4H6 and CAS number 107-00-6 that is used in the synthesis of organic compounds. It occurs as a colorless gas.[1]

See also[edit]


  1. ^ a b c d e Lide, David R. (2008). CRC Handbook of Chemistry and Physics, 89th Edition. CRC Press. pp. 3–84. ISBN 978-0-8493-0488-0. 

External links[edit]