Registration Dossier

Environmental fate & pathways

Phototransformation in air

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Administrative data

Endpoint:
phototransformation in air
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well documented publication which meets basic scientific principles.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1987

Materials and methods

Principles of method if other than guideline:
- flashlight photolysis ( generation of OH radicals)
- resonance fluorescence (determination of OH radical concentration during reaction with o-chloronitrobenzene)
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Light source:
not specified
Light spectrum: wavelength in nm:
> 115
Details on light source:
To produce OH radicals a lamp emits flashlight with an energy of 2 J.
Details on test conditions:
temperature: 25 °C
pressure: 133 mbar

Results and discussion

Any other information on results incl. tables

- rate constant of reaction between o-chloronitrobenzene and OH radicals: 8.7 ( ± 0.6) x 10 -4 cm³/s

- this results in a tropospheric residence of 270 ( ± 20) days (assuming 5 x 10E5 OH-molecules/cm³)

- t1/2 = 135 days

Applicant's summary and conclusion