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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Test was conducted according to CEE C2 and compliant with GLP.

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1996

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: CEE C2
Deviations:
not specified
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
Phenol, 2-(4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl)-5-(3-((2- ethylhexyl)oxy)-2-hydroxypropoxy)-
IUPAC Name:
Phenol, 2-(4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl)-5-(3-((2- ethylhexyl)oxy)-2-hydroxypropoxy)-
Constituent 2
Chemical structure
Reference substance name:
2-(4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl)-5-(3-((2-ethylhexyl)oxy)-2-hydroxypropoxy)phenol
EC Number:
419-740-4
EC Name:
2-(4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl)-5-(3-((2-ethylhexyl)oxy)-2-hydroxypropoxy)phenol
Cas Number:
137658-79-8
Molecular formula:
C36H45N3O4
IUPAC Name:
2-[4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl]-5-{3-[(2-ethylhexyl)oxy]-2-hydroxypropoxy}phenol

Test organisms

Test organisms (species):
other aquatic crustacea: DM

Study design

Total exposure duration:
48 h

Test conditions

Hardness:
250 mg CaCO3/L

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
> 0.062 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
not specified
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
> 0.062 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
not specified
Duration:
48 h
Dose descriptor:
EC100
Effect conc.:
> 0.062 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
not specified
Duration:
48 h
Dose descriptor:
NOEC
Effect conc.:
> 0.062 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
not specified
Details on results:
% Concentration loss over test: 12.1...

Any other information on results incl. tables

Because of the low solubility of the substance in water, supersaturated suspension of 100 mg/L was made and filtered. The study was conducted using the undiluted filtrate. The measured concentration decreased by 0.066 mg/L initially up to 0.058 mg/l at the end. The average measured concentration 0.062 mg/L was used for the “Observed-effect concentration”.

Applicant's summary and conclusion

Conclusions:
The substance can be classified as non-toxic to invertebrates up to the limit of its solubility.