4'-trans-ethyl-[1,1'-bicyclohexyl]-4-one

Biodegradation in water: screening tests

Administrative data

Endpoint:

biodegradation in water: ready biodegradability

Type of information:

experimental study

Adequacy of study:

weight of evidence

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1992

Report date:

1992

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)

Deviations:

no

Test material

Test material information

Constituent 1

Study design

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge, non-adapted

Duration of test (contact time):

28 d

Initial test substance concentration

Initial conc.:

1.51 mg/L

Results and discussion

% Degradation

Key result

Parameter:

% degradation (O2 consumption)

Value:

21

Sampling time:

28 d

BOD5 / COD results

BOD5 / COD

Key result

Parameter:

ThOD

Value:

3.01 mg O2/g test mat.

Applicant's summary and conclusion

Validity criteria fulfilled:

yes