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: BUA report

Data source

Referenceopen allclose all

Reference Type:
other: BUA Report
Title:
Unnamed
Year:
1991
Reference Type:
other: BUA Report
Title:
Unnamed
Year:
1994
Reference Type:
other company data
Title:
Unnamed
Year:
1992

Materials and methods

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

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Analytical method:
other: BUA report
Light source:
other: BUA report
Sensitiser (for indirect photolysis)
Type of sensitiser:
other: BUA report

Results and discussion

Any other information on results incl. tables

BUA report:

The UV spectra of o- amd m-chloroaniline (> 295 nm) indicated that direct photodegradation of both substances is possible. The half-life for the direct phototransformation of o-chloroaniline was estimated to be 2 -3 h. Thus, the direct phototransformation was assessed to contribute markedly to the elimination of o-chloroaniline in the environment. Additionally, for p-chloroaniline a transformation half-life of 3 hours and a photomineralization half-life of 23 days have been determined in a test system simulating field conditions with water from an estuary in daylight during winter 3 cm below the surface. The half -life for direct photodegradation of m-chloroaniline in water is 1.3 hours in light at 313 nm.

There is no measurment on indirect photodegradation for o-chloroaniline available. But for aniline the half-life of indirect photodegradation in water with carbonate radicals in concentrations wich are found in the environment is 11 hours. The half-life of m-chloroaniline should be the same order of magnitude.

Applicant's summary and conclusion