Isoprene (C5H8) is a colourless liquid with an aromatic odour. Commercially viable quantities of isoprene are extracted under tightly controlled conditions from a by-product stream of ethylene manufacture and are therefore essentially derived from crude oil via a number of extraction steps. About 800,000 tonnes are produced annually. About 95% of isoprene production is used to produce cis-1,4-polyisoprene—a synthetic version of natural rubber. The polymerisation of isoprene using catalysts yields a synthetic rubber, polyisoprene, which closely resembles natural rubber. Polyisoprene is used in a wide variety of rubber applications including medical equipment, baby bottle teats/nipples, toys, shoe soles, tyres, and elastic films and threads for golf balls or textiles. It is also used in adhesives and in paints and coatings. UNNA Identification: Isoprene, Inhibited : UN1218 CLASS 3: Flammable liquid.
NFPA 704 Health 2, Flamability 4, Reactivity 2
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