Perkadox® L-W75 may be used for the polymerization of styrene in the temperature range of 80-100°C. Perkadox® L-W75 may also be used for the polymerization and copolymerization of (meth)acrylonitrile, vinylacetate, tetrafluoroethylene, divinylbenzene, para-methylstyrene and diallyl phthalate.