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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:
other information
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study according to OECD / EU guidelines

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2006

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Inoculum or test system:
activated sludge, non-adapted
Duration of test (contact time):
28 d

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (CO2 evolution)
Value:
10
Sampling time:
10 d
Parameter:
% degradation (CO2 evolution)
Value:
27
Sampling time:
28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
other: not readily biodegradable
Conclusions:
Under the condition of the test conducted according to OECD Guideline 301 B 3,4'Dichlordiphenylether must be regarded as not readily biodegradable in the 10-d-window and after 28 days.