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: Guideline study, GLP compliance

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1989
Report date:
1989

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: OECD 301B
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Duration of test (contact time):
28 d
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Parameter:
not specified
Value:
19
Sampling time:
28 d
Details on results:
Points of degradation plot (testsubstance):
2 % degradation after 3 d
4 % degradation after 7 d
6 % degradation after 10 d
11% degradation after 17d
14% degradation after 20 d
18% degradation after24 d
20 % degradation after27 d
19%degradation after28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):
4 % degradation after 3 d
59 %degradation after7 d
71 % degradation after 10 d
82%degradation after 17 d
89% degradation after20 d
91 %degradation after24 d
92% degradation after27 d
92%degradation after28 d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegradable