Decanedioic acid, 1,10-bis[2,2,6,6-tetramethyl-1-(octyloxy)-4-piperidinyl] ester

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)

Rationale for reliability incl. deficiencies:

other: Guideline study, GLP compliance

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1989

Report date:

1989

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: OECD 301B

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

bis[2,2,6,6-tetramethyl-1-(octyloxy)piperidin-4-yl] decanedioate

EC Number:

687-535-9

Cas Number:

122586-52-1

Molecular formula:

C44H84N2O6

IUPAC Name:

bis[2,2,6,6-tetramethyl-1-(octyloxy)piperidin-4-yl] decanedioate

Study design

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge, domestic, non-adapted

Duration of test (contact time):

28 d

Reference substance

Reference substance:

aniline

Results and discussion

% Degradation

Parameter:

not specified

Value:

19

Sampling time:

28 d

Details on results:

Points of degradation plot (testsubstance):
2 % degradation after 3 d
4 % degradation after 7 d
6 % degradation after 10 d
11% degradation after 17d
14% degradation after 20 d
18% degradation after24 d
20 % degradation after27 d
19%degradation after28 d

BOD5 / COD results

Results with reference substance:

Points of degradation plot (reference substance):
4 % degradation after 3 d
59 %degradation after7 d
71 % degradation after 10 d
82%degradation after 17 d
89% degradation after20 d
91 %degradation after24 d
92% degradation after27 d
92%degradation after28 d

Applicant's summary and conclusion

Interpretation of results:

other: not readily biodegradable