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Environmental fate & pathways

Phototransformation in air

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Administrative data

Link to relevant study record(s)

Description of key information

The experimentall determined reaction rate constant for the reaction of acetophenone with OH radicals in the gas-phase is reported to be 2.74 x 10E-12 cm³/molecule x s. Taking into account a OH radical concentration of 5 x 10E5 radicals/cm³ (24 h day) a tropospheric half-life t1/2=5.86 d can be calculated.

Key value for chemical safety assessment

Half-life in air:
6 d

Additional information

The tropospheric half-life of acetophenone was determined using an experimentally determined reaction rate constant taken from a reliable source.