1,3-Butadiene - C4h6

1,3-Butadiene has the chemical formula C4H6 and the structural formula H2C=CH-CH=CH2. It is an important industrial chemical used as a monomer in the production of synthetic rubber. It is also used in mixtures to calibrate analysers for the petrochemical analysis. 

Its major hazards are fire and reactivity.


Molecular weight 54.09 g/mol

Gaseous phase Gas density (1.013 bar at boiling point): 2.55 kg/m3
 Gas density (1.013 bar and 15 °C (59 °F)): 2.36 kg/m3

Solid phase Melting point: -108.9 °C

Liquid phase Boiling point (1.013 bar): -4.5 °C
 Liquid density (1.013 bar at boiling point): 650 kg/m3

Critical point Critical temperature: 152 °C
 Critical pressure: 43.22 bar