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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:
key study
Study period:
1987
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: guideline study without detailed documentation

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
1987
Reference Type:
secondary source
Title:
Unnamed
Year:
1994
Reference Type:
publication
Title:
Unnamed
Year:
2006

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
purity: no data

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, non-adapted
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
80 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
0
Sampling time:
28 d

Any other information on results incl. tables

no further data


Applicant's summary and conclusion

Interpretation of results:
under test conditions no biodegradation observed
Executive summary:

The closed bottle test (OECD 301D) was conducted by the BAYER AG.

Tested concentrations were in a range up to 80 mg/L, the test duration was 28 days, the inoculum consisted of non adapted, activated sludge.

The test showed after 28 days 0% degradation. Therefore, 3,4 -DCA is regarded as non readily biodegradable in surface waters.