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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
Study period:
10/2000 - 12/2000
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: study performed according to OECD and GLP guidelines
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2000
Report date:
2000

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 E (Ready biodegradability: Modified OECD Screening Test)
Deviations:
no
Principles of method if other than guideline:
-
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
4-methyloxazole-5-carbonitrile
EC Number:
213-709-7
EC Name:
4-methyloxazole-5-carbonitrile
Cas Number:
1003-52-7
Molecular formula:
C5H4N2O
IUPAC Name:
4-methyl-1,3-oxazole-5-carbonitrile

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
sewage, predominantly domestic (adaptation not specified)
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
1 g/L
Based on:
test mat.

Results and discussion

% Degradation
Parameter:
% degradation (DOC removal)
Value:
9.2
Sampling time:
28 d
Details on results:
no further details

Any other information on results incl. tables

no overall remarks

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
other: substance is not readily biodegradable
Conclusions:
Oxazolnitril is not readily biodegradable
Executive summary:

Oxazolnitril was not readily biodegradable under the conditions of the OECD test 301E