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

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
1993
Report date:
1993
Reference Type:
publication
Title:
Unnamed
Year:
1997

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
Deviations:
yes
Qualifier:
according to guideline
Guideline:
other:
Deviations:
not specified

Test material

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, domestic, non-adapted
Duration of test (contact time):
ca. 34 d
Initial test substance concentrationopen allclose all
Initial conc.:
10 mg/L
Based on:
test mat.
Initial conc.:
20 mg/L
Based on:
test mat.

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (CO2 evolution)
Value:
84.9
Sampling time:
28 d
Remarks on result:
other:
Parameter:
% degradation (CO2 evolution)
Value:
88.2
Sampling time:
35 d
Remarks on result:
other:
Parameter:
% degradation (CO2 evolution)
Value:
83.1
Sampling time:
28 d
Remarks on result:
other:
Parameter:
% degradation (CO2 evolution)
Value:
90.3
Sampling time:
35 d
Remarks on result:
other:

Applicant's summary and conclusion

Validity criteria fulfilled:
no