Registration Dossier

Environmental fate & pathways

Phototransformation in air

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Description of key information

The half-life for 1-chloro-2-methylbenzene by photodegradation in air was estimated to be 8.8 days using EPISuite Sortware. The calculation was based on an OH radical concentration of 5E+05 OH radicals/cm³ as a 24 h average (Currenta 2009). According to the guidance document R.11 (ECHA, 2008, p19), substances characterized by an atmospheric half-life greater than 2 days may have the potential for a long range atmospheric transport and thus may be deposited to remote areas.

Key value for chemical safety assessment

Half-life in air:
8.8 d

Additional information