Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Test was conducted according to Directive 84/449/EEC, C. 5 and compliant with GLP

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1991

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
other: Directive 84/449/EEC, C.5 (Mod. Sturm)
Deviations:
not specified
Qualifier:
according to
Guideline:
other: Directive 84/449/EEC, C.9 (CSB/COD)
Deviations:
not specified
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Duration of test (contact time):
28 d
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Parameter:
% degradation (test mat. analysis)
Value:
3
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance):
3% degradation after 4 d
2% degradation after 7 d
2% degradation after 11 d
2% degradation after 15 d
2% degradation after 18 d
1% degradation after 22 d
2% degradation after 27 d
3% degradation after 28 d

BOD5 / COD results

BOD5 / COD
Parameter:
COD
Value:
2.1 g O2/g test mat.
Results with reference substance:
Points of degradation plot (reference substance):
45.3% degradation after 4 d
69.6% degradation after 7 d
78.3% degradation after 11 d
81.1% degradation after 15 d
86.3% degradation after 18 d
84.9% degradation after 22 d
84.3% degradation after 27 d
87.2% degradation after 28 d

Any other information on results incl. tables

Biodegradation: 3% at 20 mg/L.

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable
Conclusions:
The substance is not readily biodegradable.