Registration Dossier

Administrative data

Endpoint:
phototransformation in water
Type of information:
other: BUA report
Adequacy of study:
other information
Reliability:
other: BUA report
Rationale for reliability incl. deficiencies:
other: No reliability is given as this is a summary entry for the BUA report.

Data source

Referenceopen allclose all

Reference Type:
secondary source
Title:
1,2-Dichloronitrobenezole, BUA-Stoffbericht 52 (Juli 1990) [Report in German]
Author:
GDCh, BUA
Year:
1990
Bibliographic source:
publisher: VCH Verlagsgesellschaft, Weinheim; ISSN: 0179-2601
Reference Type:
publication
Title:
Photokatalytischer Abbau von Chlornitrobenzolen an TiO2 in wäßriger Phase
Author:
Hustert K et al.
Year:
1987
Bibliographic source:
Chemosphere 16, 809-812
Reference Type:
publication
Title:
The determination of pentachloronitrobenzene and dichloronitrobenzene in water and sediment.
Author:
Kondo S et al.
Year:
1982
Bibliographic source:
Suishitsu Odaku ni Kansuru Kenkyu Shuho 12, 67-71

Materials and methods

Principles of method if other than guideline:
BUA report
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

Although 1,2-dichloro-3-nitrobenzene absorbs in the range of wavelength > 290 nm, no reacting of a aqeous solution at irradiation is observed. But in presence of titanium dioxide a rapid photo mineralisation is detected. The tests were conducted concentrations of 7.68 mg/l 1,2-dichloro-3-nitrobenzene and 500 mg/l titanium dioxide (disperse) were used. After 35 minutes 50 % of 1,2-dichloro-3-nitrobenzene were decomposed. After 3 hours 1,2-dichloro-3-nitrobenzene was not yet complete degraded. Primary reaction products are dichloronitrobenzene (mainly 1,2-dichloro-3,5dinitrobenzene) and dichloronitrophenole.

The photocatalytical reaction with titanium dioxide is also possible at sunlight but with lower reaction rate. (Hustert et al., 1987). Indications of photocatalytical degradation were obtain by Kondo et al (1982). A concentration decay of 3.8 % was detected after 5 day storage at pH 7 and 20+/- 5 °C in darkness; in daylight the concentration decay was 7.6%. The interpretation of the values is critical because for the preparation of the solutions acetone was used. Acetone may act as a sensitizer.

Applicant's summary and conclusion