Registration Dossier

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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2000
Report Date:
2000

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method C.4-E (Determination of the "Ready" Biodegradability - Closed Bottle Test)

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic (adaptation not specified)
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
2 mg/L

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (O2 consumption)
Value:
51
Sampling time:
7 d
Parameter:
% degradation (O2 consumption)
Value:
65
Sampling time:
14 d
Parameter:
% degradation (O2 consumption)
Value:
91
Sampling time:
21 d
Parameter:
% degradation (O2 consumption)
Value:
93
Sampling time:
28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes