![]() Meanwhile, other chemists had been investigating another component of storax, namely, cinnamic acid. ![]() In 1865, the German chemist Emil Erlenmeyer found that styrene could form a dimer, and in 1866 the French chemist Marcelin Berthelot stated that "metastyrol" was a polymer of styrene (i.e. Furthermore, they could obtain styrene by dry-distilling "metastyrol". ![]() They had also determined that Simon's "styrol oxide" – which they renamed "metastyrol" – had the same empirical formula as styrene. By 1845, the German chemist August Hofmann and his student John Blyth had determined styrene's empirical formula: C 8H 8. He also noticed that when styrol was exposed to air, light, or heat, it gradually transformed into a hard, rubber-like substance, which he called "styrol oxide". He called the liquid "styrol" (now styrene). In 1839, the German apothecary Eduard Simon isolated a volatile liquid from the resin (called storax or styrax (Latin)) of the American sweetgum tree ( Liquidambar styraciflua). Styrene occurs naturally in small quantities in some plants and foods ( cinnamon, coffee beans, balsam trees and peanuts) and is also found in coal tar. ![]() ![]() Styrene is named after storax balsam, the resin of Liquidambar trees of the Altingiaceae plant family. ![]()
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