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<p>concentrations have a less pleasant odor. Styrene is the precursor to <a href="page.php?w=polystyrene">polystyrene</a> and several copolymers, and is typically made from benzene for this purpose. Approximately 25&nbsp;million tonnes of styrene were produced in 2010, increasing to around 35 million tonnes by 2018.</p>

<p><big>Natural occurrence</big></p>
<p>Styrene is named after <a href="page.php?w=storax_balsam">storax balsam</a> (often commercially sold as styrax), the resin of <a href="page.php?w=Liquidambar">Liquidambar</a> trees of the <a href="page.php?w=Altingiaceae">Altingiaceae</a></p><p>
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