Registration Dossier

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:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid

Study design

Oxygen conditions:
anaerobic
Inoculum or test system:
activated sludge, domestic (adaptation not specified)
Duration of test (contact time):
28 d

Results and discussion

% Degradation
Key result
Parameter:
% degradation (O2 consumption)
Value:
75
Sampling time:
28 d

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
readily biodegradable
Conclusions:
The average percentage biodegradation of the test item by BOD was 75% after 28 days. In addition, the percentage biodegradation of the test item by BOD at the end of the 10-day window exceeded 60% (73% and 77%). These results met the pass level of readily biodegradability in OECD Guidelines for Testing of Chemicals. Therefore, it showed that the test item is a readily biodegradable substance.