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:
other: Guideline study

Data source

Reference
Reference Type:
publication
Title:
Biodegradation and Bioaccumulation Data of Existing Chemicals Based on the CSCL Japan.
Author:
Chemical Inspection & Testing Institute Japan (ed.)
Year:
1992
Bibliographic source:
Published by Japan Chemical Industry Ecology-Toxicology & Information Center, Oct 1992

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge (adaptation not specified)
Details on inoculum:
Sludge was sampled from several places in Japan. Established and freshly sampled material was mixed and cultured under controlled conditions at the testing facility. Visual and chemical characteristics as well as activity of the sludge were surveyed to ensure that material of sufficient quality was used in the study.
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
100 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
ca. 91 - 97
Sampling time:
28 d

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable