But-2-yne

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Names

[ CAS No. ]:
503-17-3

[ Name ]:
But-2-yne

[Synonym ]:
2-Butyne
Dimethyl acetylene
1,2-dimethylvinylene
Dimethylacetylene
UN1144
MFCD00009275
EINECS 207-962-2
Crotonylene
1-methyl-1-propynyl

Chemical & Physical Properties

[ Density]:
0.7±0.1 g/cm3

[ Boiling Point ]:
25.6±3.0 °C at 760 mmHg

[ Melting Point ]:
-32 °C

[ Molecular Formula ]:
C4H6

[ Molecular Weight ]:
54.090

[ Flash Point ]:
-48.5±11.2 °C

[ Exact Mass ]:
54.046951

[ LogP ]:
1.46

[ Vapour Pressure ]:
745.1±0.0 mmHg at 25°C

[ Index of Refraction ]:
1.393

[ Storage condition ]:
2-8°C

MSDS

Click to get detail MSDS

Safety Information

[ Hazard Codes ]:
F+,Xi

[ Risk Phrases ]:
R12;R36/37

[ Safety Phrases ]:
S16-S26-S36

[ RIDADR ]:
UN 1144 3/PG 1

[ WGK Germany ]:
3

[ RTECS ]:
GQ7210000

[ Packaging Group ]:
I

[ Hazard Class ]:
3

Synthetic Route

Click to get detail synthetic route

Related Compounds

  • but-2-yne
  • but-2-ynenitrile
  • but-2-yne-1,1-diol
  • but-2-yne-1,4-diol
  • but-2-yne-1,4-diol
  • 1,4-diiodobut-2-yne
  • N-Ethyl-6-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3-carboxamide
  • 3-Nitro-N-propyl-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine
  • Methyl 6-oxo-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyridine-3-carboxylate
  • 3-(Tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethoxy)aniline
  • 3-(Dimethylamino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)picolinaldehyde
  • 2-(Oxan-2-yl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole-3-carbaldehyde
  • 2-(Pyrrolidin-1-yl)-5-(tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde
  • [2-(Benzyloxy)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methanol
  • [2-Isopropoxy-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methanol
  • 3-Fluoro-4-(propylaminomethyl)phenylboronic acid, pinacol ester
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