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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
Principles of method if other than guideline:
Screening Test
GLP compliance:
no
Remarks:
registered for GLP

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Details on test material:
- batch: 2527407A

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic (adaptation not specified)
Details on inoculum:
- from wastewater treatment plant of Mannheim, concentration of dry substance 30 mg/L
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
29 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
CO2 evolution

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (CO2 evolution)
Value:
0
Sampling time:
3 d
Parameter:
% degradation (CO2 evolution)
Value:
20 - 30
Sampling time:
5 d
Parameter:
% degradation (CO2 evolution)
Value:
60 - 70
Sampling time:
14 d
Parameter:
% degradation (CO2 evolution)
Value:
70 - 80
Sampling time:
28 d

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable