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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
4 (not assignable)

Data source

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

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Annex V, C1
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
(2R,3R)-3-((R)-1-(tert-butyldimethylsiloxy)ethyl)-4-oxoazetidin-2-yl acetate
EC Number:
408-050-9
EC Name:
(2R,3R)-3-((R)-1-(tert-butyldimethylsiloxy)ethyl)-4-oxoazetidin-2-yl acetate
Cas Number:
76855-69-1
Molecular formula:
C13H25NO4Si
IUPAC Name:
(2R,3R)-3-[(1R)-1-[(tert-butyldimethylsilyl)oxy]ethyl]-4-oxoazetidin-2-yl acetate
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Test solutions

Details on test solutions:
A solvent stock solution was prepared in 10% Tween 80 in DMF, which was then dispersed in water at the required concentrations. The concentrations of auxiliary solvent used was 0.1 g/l in the test water.

Test organisms

Test organisms (species):
Oncorhynchus mykiss (previous name: Salmo gairdneri)

Study design

Test type:
semi-static
Water media type:
not specified
Limit test:
no
Total exposure duration:
96 h

Test conditions

Hardness:
50 mg CaCO3/l

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
LC50
Effect conc.:
7.5 mg/L
Basis for effect:
mortality (fish)
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
7.5 mg/L
Basis for effect:
mortality (fish)
Duration:
72 h
Dose descriptor:
LC50
Effect conc.:
7.5 mg/L
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
7.5 mg/L
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
NOEC
Effect conc.:
1.8 mg/L

Applicant's summary and conclusion