1-3 Butadiene

1-3 Butadiene

Product Information

General information

• Filling pressure at 15 C, bar: 2.0
• Material recommendations:
• Gas: No restrictions.
• Liquid: Avoid plastic and rubber.

Characteristics

• Highly flammable. Liquefied, colourless gas. Can form explosive peroxides in air. The cylinder
• contains an inhibitor to prevent polymerization.

Health risks

Anaesthetizes at high concentrations, carcinogenic.

Transport

ADR Class 2, 3(c)

Physical data

• Molecular weight: 54.09
• Boiling point at 1.013 bar,C: -4.41
• Density (1.013 bar, 15 C) kg/m3: 2.36
• Vapour pressure at 0 C, bar: 1.2
• 20 C, bar: 2.5
• Flammability range in air, ,% (volume): 2.0-12.0
• Specific volume (1.013 bar, 15 C), m³/kg: 0.424

Source

1,3-Butadiene is manufactured by steam cracking of naphta or gas oil fractions.

1,3-Butadiene is also produced by catalytic dehydrogenation of n-butene and n-butane, and by oxidative dehydrogenation of n-butene.

The butadiene-containing C4-fractions obtained in these processes are then further separated. While C4-fractions readily form azeotropes, butadiene is isolated by using liquid-liquid extraction or extractive distillation.

Applications

1,3-Butadiene has been widely used in the manufacture of synthetic rubber. It has been extensively used in various polymerizations in the plastic industry and is particularly useful in the Diels-Alder reaction where it combines with activated olefins to give cyclic compounds. 1.3-Butadiene is useful in a variety of miscellaneous reactions.

Butadiene is finding increasing usage in the resins and plastic fields. Copolymers containing a high percentage of styrene have been widely used as reinforcing and stiffening resin for rubber, as water and solvent-based paints, and in combinations with polystyrene for I high impact plastics. Mixtures of styrene-acrylonitrile resins and butadiene-acrylonitrile rubbers have produced exceptionally high impact plastics having good chemical and heat distortion properties.