Butadiene

 

Butadiene
aka buta-1,3-diene

Chemical formula	C4H6
OTP appearance	colorless gas
Molar Mass(g/mol)	54.0916
Density(g/cc)	0.6149
Melting Point(°C)	-108.9
Boiling Point(°C)	-4.4
Solubility in water(g/L)	0.735
Solubility in ethanol(g/L)	soluble
Solubility in acetone(g/L)	soluble
NFPA 704	4 3 2

Uses

Justification Questioned

Other

• Feedstock for 1,6-diaminohexane

Production

Synthesis

From acetylene

• Hurukawa, Zyunzi; Nakaguti, Kôhei (1940) "Synthetic Rubber from Acetylene. III. The Preparation of Butadiene by Catalytic Hydrogenation Of Monovinylacetylene in the Gaseous Phase".; pp856-860.
  DOI:10.5254/1.3546564

From Ethanol

• Dehydrogenate, then dehydrate two mols of ethanol into one mol of butadiene

2 CH₃CH₂OH → C₄H₆ + H₂ + 2 H₂O