Butadiene (data page)
# Butadiene (data page)

Properties :

| General ||
| - | - |
| Name | 1,3-Butadiene |
| $CH_2=CH-CH=CH_2$ ||
| Chemical formula | $C_4H_6$ |
| Molar mass | 54.09 g/mol |
| Synonyms | butadiene, biethylene, divinyl, erythrene, vinylethylene |
| CAS number | 106-99-0 |
| Phase behavior ||
| Melting point | 164.3 K (-108.9 °C) |
| Boiling point | 268.8 K (-4.4 °C) |
| Triple point | 164.2 K (-109.0 °C) ? bar |
| Critical point | 425 K (152 °C) 43.2 bar |
| Structure ||
| Symmetry group | $C_{2h}$ |
| Gas properties ||
| $Δ_fH^0$ | 110.2 kJ/mol |
| $S^0$ | ? J/mol·K |
| $C_p$ | 79.5 J/mol·K |
| Liquid properties ||
| $Δ_fH^0$ | 90.5 kJ/mol |
| $S^0$ | 199.0 J/mol·K |
| $C_p$ | 123.6 J/mol·K |
| Liquid density | 0.64 $×10^3$ $kg/m^3$ |
| Safety ||
| Acute effects | Possible irritation to skin and mucous membranes. Inhalation of concentrated vapors causes drowsiness and CNS depression. |
| Chronic effects | Possible carcinogen. |
| Flash point | -85 °C |
| Autoignition temperature | 418 °C |
| Explosive limits | 2-12% |
| More info ||
| Properties | NIST WebBook |
| MSDS | ICSC 0017 |
| SI units were used where possible. Unless otherwise stated, standard conditions were used. Disclaimer and references ||
