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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:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1982
Report date:
1982

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
Test in closed bottles, 20 days
GLP compliance:
no
Remarks:
Study conducted prior to GLP implementation

Test material

Constituent 1
Chemical structure
Reference substance name:
p-tert-butylaniline
EC Number:
212-215-9
EC Name:
p-tert-butylaniline
Cas Number:
769-92-6
Molecular formula:
C10H15N
IUPAC Name:
p-tert-butylaniline

Study design

Oxygen conditions:
not specified
Inoculum or test system:
not specified
Duration of test (contact time):
20 d
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption

Results and discussion

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

BOD5 / COD results

BOD5 / COD
Parameter:
COD
Value:
2 844 other: mg/L

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Interpretation of results:
under test conditions no biodegradation observed
Conclusions:
No biodegradation has been observed under the test conditions (0% degradation after 20 days). The reliability of the test cannot be assessed as the documentation is insufficient (reliability 4 assigned).
Executive summary:

A test in closed bottles was performed to assess the ready biodegradability of the test item (duration 20 days). No biodegradation has been observed under the test conditions (0% degradation after 20 days). As the documentation is insufficient to assess the reliability of the test, QSAR estimation has been done in addition, which confirmed the result "not readily biodegradable".