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Hazard Predictions

• Flammable: Reaction products may be flammable
• Polymerization hazard: Polymerization reaction may become intense and may cause pressurization

(MeC5H4)Mn(CO)2 catalyzes the isomerization of alkynes with allylic hydrogens, forming highly reactive allenes (Behr, A. 2010. Catalysis, Homogeneous. Ullmann's Encyclopedia of Industrial Chemistry. (Online)).

Mixtures of molybdenum hexacarbonyl and p-chlorophenol are active in the polymerization of dipropynylated dialkyl- or dialkoxybenzenes to furnish dialkyl-poly(phenylene oxide) of high molecular weight in quantitative yields (Behr, A. 2010. Catalysis, Homogeneous. Ullmann's Encyclopedia of Industrial Chemistry. (Online)).