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Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Study period:
N.A.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Test conducted according to Guideline 92/69/EWG, C.3 and GLP.

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1991

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.3 (Algal Inhibition test)
Deviations:
not specified
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
Reaction mass of bis[2,2,6,6-tetramethyl-1- (octyloxy)piperidin-4-yl] decanedioate and 1,1'-bis[2,2,6,6-tetramethyl-1- (octyloxy)piperidin-4-yl] 10,10'-{octane-1,8-diylbis[oxy(2,2,6,6- tetramethylpiperidine-1,4-diyl)]} didecanedioate
IUPAC Name:
Reaction mass of bis[2,2,6,6-tetramethyl-1- (octyloxy)piperidin-4-yl] decanedioate and 1,1'-bis[2,2,6,6-tetramethyl-1- (octyloxy)piperidin-4-yl] 10,10'-{octane-1,8-diylbis[oxy(2,2,6,6- tetramethylpiperidine-1,4-diyl)]} didecanedioate
Constituent 2
Chemical structure
Reference substance name:
A mixture of: bis(2,2,6,6-tetramethyl-1-octyloxypiperidin-4-yl)-1,10-decanedioate; 1,8-bis[(2,2,6,6-tetramethyl-4-((2,2,6,6-tetramethyl-1-octyloxypiperidin-4-yl)-decan-1,10-dioyl)piperidin-1-yl)oxy]octane
EC Number:
406-750-9
EC Name:
A mixture of: bis(2,2,6,6-tetramethyl-1-octyloxypiperidin-4-yl)-1,10-decanedioate; 1,8-bis[(2,2,6,6-tetramethyl-4-((2,2,6,6-tetramethyl-1-octyloxypiperidin-4-yl)-decan-1,10-dioyl)piperidin-1-yl)oxy]octane
Cas Number:
129757-67-1
Molecular formula:
Constituent 1: C44H84N2O6 Constituent 2 : C80H150N4O12
IUPAC Name:
2,2,6,6-tetramethyl-1-(octyloxy)piperidin-4-yl 2,2,6,6-tetramethyl-1-{[8-({2,2,6,6-tetramethyl-4-[(10-oxo-10-{[2,2,6,6-tetramethyl-1-(octyloxy)piperidin-4-yl]oxy}decanoyl)oxy]piperidin-1-yl}oxy)octyl]oxy}piperidin-4-yl decanedioate; 2,2,6,6-tetramethyl-1-(octyloxy)piperidin-4-yl 2,2,6,6-tetramethyl-4-{[8-({2,2,6,6-tetramethyl-1-[(10-oxo-10-{[2,2,6,6-tetramethyl-1-(octyloxy)piperidin-4-yl]oxy}decanoyl)oxy]piperidin-4-yl}oxy)octyl]oxy}piperidin-1-yl decanedioate; bis[2,2,6,6-tetramethyl-1-(octyloxy)piperidin-4-yl] decanedioate
Constituent 3
Reference substance name:
Reaction mass of bis[2,2,6,6-tetramethyl-1- (octyloxy)piperidin-4-yl] decanedioate and 1,1'-bis[2,2,6,6-tetramethyl-1- (octyloxy)piperidin-4-yl] 10,10'-{octane-1,8-diylbis[oxy(2,2,6,6- tetramethylpiperidine-1,4-diyl)]} didecanedioate
IUPAC Name:
Reaction mass of bis[2,2,6,6-tetramethyl-1- (octyloxy)piperidin-4-yl] decanedioate and 1,1'-bis[2,2,6,6-tetramethyl-1- (octyloxy)piperidin-4-yl] 10,10'-{octane-1,8-diylbis[oxy(2,2,6,6- tetramethylpiperidine-1,4-diyl)]} didecanedioate
Details on test material:
Identity and concentration of auxiliary solvent for dispersal: 1% v/v of Tween 80 - acetone

Test organisms

Test organisms (species):
Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)

Study design

Limit test:
yes
Total exposure duration:
72 h

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
> 2 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
< 2 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
> 2 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
> 2 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
biomass
Details on results:
% Concentration loss over test: 13... 17

Applicant's summary and conclusion