Parameters of inhibited oxidation of isotactic propylene containing antioxidant 2,2'-methylene-bis (4-methyl-6-tertbutylphenol) have been studied in the temperature range 140-210 degrees C. Unlike polyethylene, the dependencies of inhibited oxidation parameters of critical antioxidant concentration and of rate constant of antioxidant consumption change with temperature do not obey Arrhenius law both below and above the melting temperature. (c) 2007 Wiley Periodicals, Inc.