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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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
Guideline:
OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
1-chloro-3-(4-chlorophenoxy) benzene
EC Number:
614-477-3
Cas Number:
6842-62-2
Molecular formula:
C12 H8 Cl2 O
IUPAC Name:
1-chloro-3-(4-chlorophenoxy) benzene

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.