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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

Referenceopen allclose all

Reference Type:
publication
Title:
Studies on photochemistry of aromatic hydrocarbons V. Photochemical reaction of chlorobenzene with nitrogen oxides in air.
Author:
Kanno S. and Nojima K.
Year:
1979
Bibliographic source:
Chemosphere No. 4, pp 225-232
Reference Type:
review article or handbook
Title:
m-Chlornitrobenzol, p-Chlornitrobenzol
Author:
BUA (Beratergremium umweltrelevanter Altstoffe) (BUA)
Year:
1988
Bibliographic source:
Gesellschaft Deutscher Chemiker (Hrsg Behret) Bd 11, VCH (Verlag Chemie), Weinheim

Materials and methods

Principles of method if other than guideline:
Photochemical reactions of chloronitrobenzenes in air free from nitrogen oxides and in nitrogen free from nitrogen oxides was investigated.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
1-chloro-4-nitrobenzene
EC Number:
202-809-6
EC Name:
1-chloro-4-nitrobenzene
Cas Number:
100-00-5
Molecular formula:
C6H4ClNO2
IUPAC Name:
1-chloro-4-nitrobenzene
Details on test material:
- Name of test material (as cited in study report): -Chloronitrobenzene
- Analytical purity: no data

Study design

Light source:
Xenon lamp
Duration of test at given test condition
Duration:
5 h
Temp.:
25 °C

Results and discussion

Any other information on results incl. tables

Photochemical reaction of o-chloronitrobenzene in air free from nitrogen oxides

- irradiation results in chloronitrophenols (2-chloro-6-nitrophenol and 2-chloro-4-nitrophenol)

- the reaction never produced the directly hydroxylated derivatives

Photochemical reaction of o-chloronitrobenzene in nitrogen free from nitrogen oxides

- irradiation results in chlorophenols (o-Chlorophenol)

- the nitro group in the test compound was converted to the hydroxyl group

For both tests, in air free from nitrogen oxides as well as in nitrogen free from nitrogen oxides the rate of disappearance of o-Chloronitrobenzene was significantly higher in quartz vessels than in glass vessels.

Rate of disappearance of o-Chloronitrobenzene:

- air free from nitrogen oxides / glass vessel: 4.3 %

- air free from nitrogen oxides / quartz vessel: 66 %

- nitrogen free from nitrogen oxides / glass vessel: 9.5 %

- nitrogen free from nitrogen oxides / quartz vessel: 93%

Applicant's summary and conclusion