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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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study. adapted sludge was used.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1988
Report date:
1988

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2,5,6-trimethylcyclohex-2-en-1-one
EC Number:
243-473-0
EC Name:
2,5,6-trimethylcyclohex-2-en-1-one
Cas Number:
20030-30-2
Molecular formula:
C9H14O
IUPAC Name:
2,5,6-trimethylcyclohex-2-en-1-one
Details on test material:
- Name of test material (as cited in study report): 2,3,6-Trimethylcyclohexen-1-one

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, industrial (adaptation not specified)
Details on inoculum:
Source of incoculum: BASF treatment plant
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
100 other: µl/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:
< 10
Sampling time:
28 d
Details on results:
Kinetic of test substance (in %):
< 10 after 28 day(s)

BOD5 / COD results

Results with reference substance:
Kinetic of control substance (in %):
< 10 after 3 day(s)
> 70 after 10 day(s)

Applicant's summary and conclusion

Interpretation of results:
other: poorly biodegradable

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