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-cyclopentyl-2-[4-(thiomorpholine-4-carbonyl)piperidin-1-yl]acetamide
N-[(furan-2-yl)methyl]-2-[4-(thiomorpholine-4-carbonyl)piperidin-1-yl]acetamide
N-(prop-2-en-1-yl)-2-[4-(thiomorpholine-4-carbonyl)piperidin-1-yl]acetamide
N-{5-[4-(5-methoxy-1,3-benzothiazol-2-yl)piperazin-1-yl]pyridin-2-yl}cyclopropanecarboxamide
2-[3-(4,4-difluoropiperidine-1-carbonyl)piperidin-1-yl]-N-(prop-2-en-1-yl)acetamide
N-{1-[(cyclohexylcarbamoyl)methyl]piperidin-3-yl}-2,2-dimethylpropanamide
2-(1-methyl-1H-pyrazol-4-yl)-6-(4-{2-methylpyrido[3,4-d]pyrimidin-4-yl}piperazin-1-yl)pyrazine
6-fluoro-2-{4-[6-(2-methyl-1H-imidazol-1-yl)pyridin-2-yl]piperazin-1-yl}-1,3-benzoxazole
3-Bromo-5-chloro-2-{3-[(pyridin-3-yloxy)methyl]azetidin-1-yl}pyridine
5-Bromo-3-chloro-2-{3-[(pyridin-3-yloxy)methyl]azetidin-1-yl}pyridine

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