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Environmental fate & pathways

Phototransformation in air

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phototransformation in air
Type of information:
Adequacy of study:
other information
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Although not an experimental paper, this literature review is one of the basic papers from Atkinson, the reference for atmospheric reactions.
Principles of method if other than guideline:
The method used was a quantitative structure-activity relationship developed by Atkinson R. (1988).
GLP compliance:
not specified
Light source:
not specified
Details on test conditions:
Sensitiser (for indirect photolysis): OH
Sensitiser concentration: 500000 molecule/cm³
% Degr.:
Sampling time:
12 h

Rate constant (for indirect photolysis): = 0.0000000000317 cm³/(molecule*sec).

The half-life of guaiacol with hydroxyl radical was 0.5 days.

Description of key information

Atkinson (1988) estimated a rate constant for indirect photolysis for guaiacol of 0.0000000000317 cm3/(molecule.sec) and a half-life with hydroxyl radical of 0.5 days. 

Key value for chemical safety assessment

Additional information