A mixture of branched and linear C7-C9 alkyl 3-[3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]propionates

Biodegradation in water and sediment: simulation tests

Administrative data

Endpoint:

biodegradation in water: sediment simulation testing

Type of information:

experimental study

Adequacy of study:

key study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2005

Report date:

2005

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 308 (Aerobic and Anaerobic Transformation in Aquatic Sediment Systems)

Test material

Test material information

Constituent 1

Radiolabelling:

yes

Study design

Oxygen conditions:

aerobic

Inoculum or test system:

natural water / sediment

Duration of test (contact time):

100 d

Initial test substance concentration

Initial conc.:

0.03 mg/L

Based on:

test mat.

Results and discussion

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

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

Compartment:

other:

DT50:

1.4 d

Type:

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

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

Compartment:

other:

DT50:

6.9 d

Type:

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

Half-life of parent compound / 50% disappearance time (DT50) 3

Compartment:

other:

DT50:

7.6 d

Type:

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

Half-life of parent compound / 50% disappearance time (DT50) 4

Compartment:

other:

DT50:

1 d

Type:

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

Half-life of parent compound / 50% disappearance time (DT50) 5

Compartment:

other:

DT50:

9.4 d

Type:

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

Half-life of parent compound / 50% disappearance time (DT50) 6

Compartment:

other:

DT50:

7.5 d

Type:

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