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Environmental fate & pathways

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Hydrolysis:A review of structure of styrene shows that it contains no potentially hydrolysable functional groups. Therefore, based on the structure of styrene (i. e. lack of hydrolysable functional groups), it is not expected to hydrolyze significantly in the environment.

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.