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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Body responsible for the test

Data source

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

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: Sturm. OECD GUIDELINE 301 B (1984) EEC Directive 84/449 (1984) - Annex V - Method C4
Deviations:
not specified
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
not specified

Study design

Oxygen conditions:
not specified
Inoculum or test system:
not specified
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
20 mg/L
Based on:
not specified

Results and discussion

% Degradation
Value:
28
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance):
4 % degradation after 2 d
11 % degradation after 6 d
18 % degradation after 10 d
23 % degradation after 14 d
28 % degradation after 28 d

Any other information on results incl. tables

Points of degradation plot (reference substance):

4 % degradation after 2 d

11 % degradation after 6 d

18 % degradation after 10 d

23 % degradation after 14 d

28 % degradation after 28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Interpretation of results:
under test conditions no biodegradation observed
Conclusions:
The test substance is not readily biodegradable under the conditions of the test.