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Environmental fate & pathways

Phototransformation in air

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Description of key information

The half-life for the photodegradation of ditolyl ether by reaction with hydroxyl radicals in air is estimated to be 0.62 days or 14.8 hours as estimated with AOPWIN (v1.91).

Key value for chemical safety assessment

Half-life in air:
14.8 h
Degradation rate constant with OH radicals:
25.69 cm³ molecule-1 s-1

Additional information

The photodegradation of ditolyl ether by reaction with hydroxyl radicals in air was estimated with AOPWIN (v1.91). Based on a 24 hrs day and a concentration of 0.5E6 OH radicals/cm3, the overall rate constant was calculated to be 25.96E-12 cm3/molecule*sec and the half-life for photodegradation of ditolyl ether was 0.62 days or 14.8 hrs, respectively.