Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: inherent biodegradability
Type of information:
experimental study
Adequacy of study:
other information

Data source

Reference
Reference Type:
publication
Title:
BUA Report 137:C4-6 Dicarboxylic acids
Author:
Hirzel
Year:
1992

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
Version / remarks:
DIN38412

Study design

Initial test substance concentration
Initial conc.:
400 mg/L
Based on:
DOC
Reference substance
Reference substance:
other: C4-6 Dicarboxylic acids

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
5
Sampling time:
3 h

Any other information on results incl. tables

Biodegradation:

Degradation after 7 days was 99% (based on DOC).

In the Zahn-Wellens test, 5% degradation was observed after 3 hours. The concentration was 400 mg/L.

Therefore the substance is regarded to be readily biodegradable.

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable