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Environmental fate & pathways

Phototransformation in air

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Description of key information

Rate constant: 14.2 E-12 cm3/molecule-sec
Degradation: 50% after 9.0 h

Key value for chemical safety assessment

Half-life in air:
9 h

Additional information

Indirect photochemical degradation of isodecyl benzoate as mediated by OH-attack is estimated to have a half-life of 9.0 hours based on a rate of 14.2 E-12 cm3/molecule-sec, and

an average OH- concentration of 1.5E6 OH-/cm3. Although isodecyl benzoate has the potential to degrade rapidly by OH-attack, isodecyl benzoate is unlikely to partition to the air compartment because it has a low vapor pressure (0.00845Pa). Although isodecyl benzoate has a relatively short atmospheric oxidation half-life (9.0 hours), this process is unlikely to contribute significantly to the loss of IDB from the environment.