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:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
publication
Title:
Biodegradation and Bioconcentration of Existing Chemical Substances under the Chemical Substances Control Law
Year:
1988
Bibliographic source:
the Official Bulletin of Economy,Trade and Industry

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Duration of test (contact time):
4 wk
Initial test substance concentration
Initial conc.:
100 other: ppm

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (TOC removal)
Value:
>= 86
Sampling time:
4 wk
Parameter:
% degradation (test mat. analysis)
Value:
89
Sampling time:
4 wk
Details on results:
Chemical substance determinated to be ready biodegradable

BOD5 / COD results

BOD5 / COD
Parameter:
BOD5
Value:
96 other: %

Applicant's summary and conclusion

Interpretation of results:
readily biodegradable