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Environmental fate & pathways

Phototransformation in air

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Description of key information

The rate constant of the OH radical sensitized indirect photodegradation of isophorone diisocyanate has been calculated using a well established QSAR method (AOP Computer Program, Vers. 1.90) as 8.8248E-12 cm³/(molecule*sec). This corresponds to a half-life of 1.8 days at a 24 hour mean OH radical concentration of 500,000 molecule/cm³, which is typical of Central Europe.

Key value for chemical safety assessment

Half-life in air:
1.8 d
Degradation rate constant with OH radicals:
0 cm³ molecule-1 s-1

Additional information