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Environmental fate & pathways

Phototransformation in air

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Description of key information

rate constant: 12x10^-12cm3.molecule-1.s-1 (by calculation)
rate constant: 12.5 x10^-12cm3.molecule-1.s-1 at 298K (experimental)
rate constant: 11x10^-12cm3.molecule-1.s-1 (by calculation)

Key value for chemical safety assessment

Additional information

Both experimental and calculated values for the rate constant for the reaction with hydroxyl radical are available for photodegradation. These are very consistent and lead to the conclusion that the dissipation half life for the parent compound is somewhere in the range 0.6 to 0.9 days, i.e degradation in the atmosphere is quite rapid.