Physical Properties of 1,3-Butadiene

Molecular Weight:54.09

Boiling Point:-4.5 oC at 760 mm Hg

Melting Point:108.91 oC

Vapor Pressure:910 mm Hg at 20 oC

Vapor Density:1.87 (air = 1)

Density/Specific Gravity:0.6211 at 20/4 oC (water = 1)

Log Octanol/Water Partition Coefficient:1.99

Conversion Factor:1 ppm = 2.25 mg/m3

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1,3-Butadiene