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Environmental fate & pathways

Phototransformation in air

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Description of key information

DCDPS is moderately degraded by indirect photolysis in the troposphere.

Key value for chemical safety assessment

Half-life in air:
27.3 d
Degradation rate constant with OH radicals:
0.051 m³ molecule-1 d-1

Additional information

DCDPS is subject to hydroxylation by OH radicals in the troposphere. The calculated half-life in air (DT50, air= 27.3 d) is derived from the specific degradation rate constant (kdeg, air), which was calculated on the bases the atmospheric OH rate constant estimated by QSPR (Meylan & Howard 1993).

Direct photolysis is not likely due to the structure of DCDPS.