1,3-Butadiene (data page)

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Properties

General

Name 1,3-Butadiene

CH2=CH-CH=CH2

Chemical formula C4H6
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 C2h

Gas properties

ΔfH0 110.2 kJ/mol
S0  ? J/mol·K
Cp 79.5 J/mol·K

Liquid properties

ΔfH0 90.5 kJ/mol
S0 199.0 J/mol·K
Cp 123.6 J/mol·K
Liquid density 0.64 ×103 kg/m3

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.

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