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Diss Factsheets

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)
Rationale for reliability incl. deficiencies:
other: GLP study according EU/OECD guideline.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
1-(3-chloropyridin-2-yl)-3-{[5-(trifluoromethyl)-2H-1,2,3,4-tetrazol-2-yl]methyl}-1H-pyrazole-5-carboxylic acid
EC Number:
936-882-7
Cas Number:
1352319-02-8
Molecular formula:
C12H7ClF3N7O2
IUPAC Name:
1-(3-chloropyridin-2-yl)-3-{[5-(trifluoromethyl)-2H-1,2,3,4-tetrazol-2-yl]methyl}-1H-pyrazole-5-carboxylic acid

Study design

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

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (O2 consumption)
Value:
2
Sampling time:
7 d
Parameter:
% degradation (O2 consumption)
Value:
3
Sampling time:
14 d
Parameter:
% degradation (O2 consumption)
Value:
1
Sampling time:
21 d
Parameter:
% degradation (O2 consumption)
Value:
2
Sampling time:
28 d
Remarks on result:
other: Not Readily Biodegradable
Details on results:
Not readily biodegradable

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
under test conditions no biodegradation observed
Conclusions:
The test substance is not readily biodegradable under the conditions of this test. Significant biodegradation was not detected.