Registration Dossier

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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study with acceptable restrictions

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2014

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: 92/69/EWG, C.3
GLP compliance:
yes

Test material

Constituent 1
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
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

Test solutions

Details on test solutions:
Identity and concentration of auxlIIary solvent for dispersal: 1%v/v of Tween 80 - acetone

Test organisms

Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)

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
Basis for effect:
biomass
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
< 2 mg/L
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
> 2 mg/L
Basis for effect:
growth rate
Duration:
72 h
Dose descriptor:
NOEC
Effect conc.:
> 2 mg/L
Basis for effect:
biomass
Details on results:
%Concentration loss over test: 13 ... 17

Applicant's summary and conclusion