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Environmental fate & pathways

Phototransformation in water

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Description of key information

In the hydrosphere a half-life of 21 d in surface water under noon summer sunlight and the latitude of Switzerland was estimated for p-cresol.

Key value for chemical safety assessment

Half-life in water:
21 d

Additional information

In the hydrosphere the cresols are expected to undergo photolytical degradation because of the presence of the aromatic ring which acts as a chromophore. By irradiation of solutions of p-cresol in a merry-go-round reactor, with rose bengal as a sensitizer, a half-life of 21 d in surface water under noon summer sunlight and the latitude of Switzerland was estimated.