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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
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
2000
Report date:
2000

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
444-140-4
EC Name:
-
Cas Number:
18934-00-4
Molecular formula:
C12H22O3
IUPAC Name:
3-ethyl-3-{[(3-ethyloxetan-3-yl)methoxy]methyl}oxetane
Test material form:
liquid

Study design

Inoculum or test system:
other: activated sludge
Duration of test (contact time):
ca. 28 d
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
DOC removal
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Key result
Parameter:
% degradation (DOC removal)
Value:
ca. 3
Sampling time:
28 d

BOD5 / COD results

BOD5 / COD
Key result
Parameter:
BOD5
Value:
ca. 71.7 mg O2/g test mat.
Results with reference substance:
% Degradability based on residual test substance is 2.0.

Applicant's summary and conclusion

Interpretation of results:
not readily biodegradable
Conclusions:
From the degradability results based on the BOD, DOC and the residual test substance concentration, it is concluded that the test substance is not readily biodegradable and not transformed under the condition this test.