Registration Dossier
Registration Dossier
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EC number: 203-632-7 | CAS number: 108-95-2
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Phenol is relative quickly photodegraded in air by reaction with OH radicals. Half-lives of 14 h based on the experimentally determined reaction rate constant and 11 h based on the calculated reaction rate constant were calculated.
Key value for chemical safety assessment
- Half-life in air:
- 14 h
Additional information
Based on the experimental reaction rate constant k(OH)=28.3 x 10E-12 cm3/molecule x s at room temperature and assuming an OH radical concentration of 5 x 10E4 radicals/cm³ a half-life t1/2=14 h was calculated. The calculated k(OH)-rate constant of phenol at room temperature (Atkinson-Method) is reported to be k(OH)=36 x 10E-12 cm3/molecule x s. The calculation yields a half-life t1/2=11 h.
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