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)
Rationale for reliability incl. deficiencies:
other: peer reviewed in HSDB 2009-08-20

Data source

Reference
Reference Type:
other: database
Title:
Chemical Risk Information Platform (CHRIP) Biodegradation and Bioconcentration. Tokyo, Japan: Natl Inst Tech Eval.
Author:
NITE
Year:
2009
Bibliographic source:
http://www.safe.nite.go.jp/english/db.html as of Feb. 10, 2009

Materials and methods

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

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Test material form:
not specified
Details on test material:
purity not reported

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, adapted
Duration of test (contact time):
ca. 28 d
Initial test substance concentration
Initial conc.:
ca. 100 mg/L
Based on:
test mat.

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (test mat. analysis)
Remarks:
HPLC
Value:
ca. 3
Remarks on result:
other: sampling time not reported, no details on single values and statistics were reported.
Parameter:
% degradation (TOC removal)
Value:
ca. 8
Remarks on result:
other: sampling time not reported, no details on single values and statistics were reported.
Parameter:
other: Th BOD
Value:
ca. 5
Remarks on result:
other: sampling time not reported, no details on single values and statistics were reported.
Details on results:
sampling time not reported, no details on single values and statistics were reported.

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Interpretation of results:
inherently biodegradable, not fulfilling specific criteria
Conclusions:
A TOC-removal rate of 8% and a value 5% of the theoretical BOD in 28 days indicates a low inherent biodegradibility.