But-2-yne

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

[ 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

[ 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