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)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2004
Report Date:
2004

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
Deviations:
no
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, adapted
Duration of test (contact time):
29 d
Initial test substance concentration
Initial conc.:
ca. 24.5 mg/L
Based on:
test mat.

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (test mat. analysis)
Value:
ca. 1.8
Sampling time:
7 d
Parameter:
% degradation (test mat. analysis)
Value:
ca. 4.7
Sampling time:
14 d
Parameter:
% degradation (test mat. analysis)
Value:
ca. 13.5
Sampling time:
28 d

Applicant's summary and conclusion

Interpretation of results:
under test conditions no biodegradation observed