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Environmental fate & pathways

Phototransformation in air

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Description of key information

Phototransformation in air:
Half-life in air: 85.7 h

Key value for chemical safety assessment

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

Additional information

There are no experimental data on the stability of anthraquinone (AQ) in the atmosphere. The calculated half-life of anthraquinone in air due to indirect photodegradation using the latest version of AopWin version 1.92 is 85.7 hours, considering a reaction constant of 1.4984 E-12 cm3/molecule.sec and a daily mean (12-h) OH-radicals concentration of 150,000 radicals/cm3.