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Environmental fate & pathways

Phototransformation in air

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Photolysis: Half life of 0.38 days is estimated for reaction of styrene with hydroxyl radicals in the atmosphere at 25oC [AOPWIN Program, v.1.92] and a half-life of 0.55 days is calculated for reaction of styrene with ozone [AOPWIN Program, v.1.91].Overall QSARs estimated half-life for degradation of styrene in air based upon AOPWIN Model is 3.28 hours.Based on the data on photochemical degradation of styrene in the air, it is considered to rapidly degrade in the atmosphere via photooxidation process.