(+/-) trans-3,3-dimethyl-5-(2,2,3-trimethyl-cyclopent-3-en-1-yl)pent-4-en-2-ol

Biodegradation in water and sediment: simulation tests

Administrative data

Endpoint:

biodegradation in water: simulation testing on ultimate degradation in surface water

Type of information:

experimental study

Adequacy of study:

key study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2013

Report date:

2013

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 309 (Aerobic Mineralisation in Surface Water - Simulation Biodegradation Test)

Deviations:

no

Test material

Test material information

Constituent 1

Test material form:

other:

Radiolabelling:

yes

Study design

Oxygen conditions:

aerobic

Inoculum or test system:

natural water / sediment

Duration of test (contact time):

56 d

Initial test substance concentration

Initial test substance concentration 1

Initial conc.:

10 µg/L

Based on:

test mat.

Initial test substance concentration 2

Initial conc.:

50 µg/L

Based on:

test mat.

Results and discussion

% Degradation

Key result

% Degr.:

> 32 - < 35

Parameter:

radiochem. meas.

Sampling time:

56 d

Remarks on result:

other:

Half-life of parent compound / 50% disappearance time (DT50)

Half-life of parent compound / 50% disappearance time (DT50) 1

Key result

Compartment:

sediment

DT50:

0.9 d

Type:

(pseudo-)first order (= half-life)

Temp.:

20 °C

Remarks on result:

other:

Half-life of parent compound / 50% disappearance time (DT50) 2

Key result

Compartment:

sediment

DT50:

0.8 d

Type:

(pseudo-)first order (= half-life)

Temp.:

20 °C

Remarks on result:

other:

Applicant's summary and conclusion

Validity criteria

Validity criteria fulfilled:

yes