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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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: GLP test

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
1992
Report date:
1992

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: 84/449/EWG, C.2
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)
EC Number:
403-800-1
EC Name:
2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)
Cas Number:
103597-45-1
Molecular formula:
C41H50N6O2
IUPAC Name:
2-(2H-1,2,3-benzotriazol-2-yl)-6-{[3-(2H-1,2,3-benzotriazol-2-yl)-2-hydroxy-5-(2,4,4-trimethylpentan-2-yl)phenyl]methyl}-4-(2,4,4-trimethylpentan-2-yl)phenol

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
not specified
Details on test solutions:
Identity and concentration of auxiliary solvent for dispersal: 6 g test substance in 54 g water containing 0.4 % lecithine dispersed using a marble-mill.

Test organisms

Test organisms (species):
other aquatic crustacea: DM

Study design

Test type:
not specified
Water media type:
freshwater
Limit test:
no
Remarks on exposure duration:
no data

Test conditions

Hardness:
240 mg CaCO3/L

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
> 50.2 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
not specified
Duration:
48 h
Dose descriptor:
NOEC
Effect conc.:
50.2 mg/L
Nominal / measured:
not specified
Conc. based on:
not specified
Basis for effect:
not specified
Details on results:
%Concentration loss over test: 54...

Applicant's summary and conclusion