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Hazard Predictions

• Generates heat: Exothermic reaction at ambient temperatures (releases heat)
• Polymerization hazard: Polymerization reaction may become intense and may cause pressurization

Ziegler-Natta catalysts (which include an organometallic part) catalyze the polymerization of dienes (and other olefins). Among the most prominent ones are transition metal-based catalysts including Ziegler or Ziegler-Natta type catalysts. The metals most frequently used are Ti, Mo, Co, Cr, Ni, V, Nd, and other lanthanides (Sun, H. N. and Wristers, J. P. 2002. Butadiene. Kirk-Othmer Encyclopedia of Chemical Technology. (Online)).