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
  • 4-((Cyclohexylamino)methyl)benzoic acid hydrochloride
  • N-(thiophen-2-yl)-1,5-dioxa-9-azaspiro[5.5]undecane-9-carboxamide
  • 1-[(2,4-Dichlorophenyl)methyl]-N-(1,1-dimethylethyl)-2-methyl-1H-indole-3-methanamine
  • 2-Methoxy-6-(pyrazol-1-yl)-benzonitrile
  • 1H-3-Benzazepin-7-ol, 8-chloro-2,3,4,5-tetrahydro-5-(3-iodophenyl)-3-methyl-, (S)-
  • (4-Methyl-tetrahydro-furan-2-yl)-methanol
  • 5-((3-(Piperidin-2-yl)propoxy)methyl)thiazole hydrochloride
  • 3-Cyclopropoxy-4-fluoro-N,N-dimethylpicolinamide
  • N-(1-cyanocyclopentyl)-2-[4-(4-fluorobenzenesulfonyl)-1,4-diazepan-1-yl]acetamide
  • 4,5,6,7-Tetrahydrobenzo[d]isoxazole-3-carbaldehyde