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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
Study period:
2012
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012

Materials and methods

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

Test material

Constituent 1
Chemical structure
Reference substance name:
N-[2-amino-4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl]-4-methoxybenzamide
EC Number:
616-054-9
Cas Number:
74149-74-9
Molecular formula:
C19 H20 N4 O3
IUPAC Name:
N-[2-amino-4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl]-4-methoxybenzamide
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
brown odorless powder

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
other: microorganism inoculum from natural superficial water
Duration of test (contact time):
28 d

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (O2 consumption)
Value:
48
Sampling time:
14 d
Parameter:
% degradation (O2 consumption)
Value:
59.3
Sampling time:
28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
other: not easily biodegradable
Conclusions:
The test substance is not easily biodegradable.
Executive summary:

Aminopyridazinone is a not easily biodegradable substance.

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