Registration Dossier

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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Test was conducted according to Guideline "The degradation test of chemical substances using bacteria" and compliant with GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1993

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other:
Deviations:
not specified
Principles of method if other than guideline:
Test methods conform to the guidelines for "The degradation test of chemical substances using bacteria " published in the official
gazette of environmental agency 49 KANPOGYO No5;
MHW 49 YAKUHATSU No. 615; MITI 49 KIKYOKU No. 392
biodegradability test by BOD: determinded by a closed system oxygen consumption measuring apparatus.
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Duration of test (contact time):
28 d
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Parameter:
not specified
Value:
< 1.8
Sampling time:
28 d
Details on results:
Points of degradation plot (test substance)
0% degradation after 7 d
1% degradation after 14 d
0% degradation after 21 d
0% degradation after 28 d

BOD5 / COD results

Results with reference substance:
Points of degradation plot (reference substance):
60.6 % degradation after 7 d
81.7 % degradation after 14 d
87.1 % degradation after 21 d
88.1 % degradation after 28 d

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegrable