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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Study period:
6.06.2000-10.06.2000
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2000
Report date:
2000

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 203 (Fish, Acute Toxicity Test)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
(1R,3S)-2,2-Dimethyl-3-(2-oxopropyl)cyclopropanecarboxylic acid
Cas Number:
70223-33-5
Molecular formula:
C9H14O3
IUPAC Name:
(1R,3S)-2,2-Dimethyl-3-(2-oxopropyl)cyclopropanecarboxylic acid
Test material form:
solid: crystalline

Test solutions

Details on test solutions:
10, 20, 50, 100, 200, 500mg/l

Test organisms

Test organisms (species):
other: Scophthalmus maximus
Details on test organisms:
TEST ORGANISM
- Common name: turbut (Danish: Pighvar)
- Strain: Scophthalmus maximus
- Source: Kommercial producer in Thisted
- Age at study initiation (mean and range, SD):
- Length at study initiation: 57-65mm (A little above the PARCOM recommended size: 40-60mm)
- Weight at study initiation: 6.9g

ACCLIMATION
- Acclimation period: 8 d
- Acclimation conditions: same as test
- Type of food: trout forage
- Health during acclimation: No mortality observed

Study design

Test type:
static
Water media type:
saltwater
Limit test:
yes
Total exposure duration:
96 h
Post exposure observation period:
24, 48, 72 & 96 h after exposure.

Test conditions

Test temperature:
20±2ºC
pH:
8±0.3
Dissolved oxygen:
> 70%
Details on test conditions:
TEST SYSTEM
- Test vessel: 10L polyethylen aquarium
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates): 2
- No. of vessels per control (replicates):1 without test substance 1 with reference test substance K2Cr2O

OTHER TEST CONDITIONS
- Photoperiod: 12:12 h light/dark

TEST CONCENTRATIONS
- Test concentrations: 10, 20, 50, 100, 200, 500 mg/l
Reference substance (positive control):
yes
Remarks:
Sodiumdichromate, K2Cr2O7

Results and discussion

Effect concentrationsopen allclose all
Duration:
96 h
Dose descriptor:
NOEC
Effect conc.:
> 500 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LOEC
Effect conc.:
> 500 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LC10
Effect conc.:
> 500 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
> 500 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Details on results:
No mortality observed
Results with reference substance (positive control):
- Results with reference substance valid? Yes
- LC50(48h): 311 mg/l

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Remarks:
Mortality in controls < 10 %, oxygen > 60%
Conclusions:
The substance has a LC50 (96h) > 500 mg/l for Scophthalmus maximus. No death was observed.