1-3 Butadiene

1-3 Butadiene Product Information Quality Code 2.5 Purity % volume >99.5 Impurities ppm (where nothing else stated) Other CnHm <0.5% General information Filling pressure at 15 C, bar: 2.0Material recommendations:Gas: No restrictions.Liquid: Avoid plastic and rubber. Characteristics Highly flammable. Liquefied, colourless gas. Can form explosive peroxides in air. The cylindercontains an inhibitor to prevent polymerization. Health risks Anaesthetizes at high concentrations, carcinogenic. Transport ADR Class 2, 3(c) Physical data Molecular weight: 54.09Boiling point at 1.013 bar,C: -4.41Density (1.013 bar, 15 C) kg/m3: 2.36Vapour pressure at 0 C, bar: 1.220 C, bar: 2.5Flammability range in air, ,% (volume): 2.0-12.0Specific 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.