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Administrative data

Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2003
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2004

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 203 (Fish, Acute Toxicity Test)
Version / remarks:
Directive CEE - Method C1
GLP compliance:
yes (incl. QA statement)

Test material

Reference
Name:
Unnamed
Type:
Constituent

Test organisms

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

Study design

Test type:
semi-static
Water media type:
freshwater
Total exposure duration:
96 h
Remarks on exposure duration:
solutions changed after 24, 48 and 72h

Test conditions

Hardness:
158 mg CaCO3 / L or 150 +/- 20 mg CaCO3/L
Test temperature:
13.7 to 15.1 °C
pH:
7.72 to 8.13
Dissolved oxygen:
6.5 to 9.3 mg/L (>= 60% of the air saturation value)
Nominal and measured concentrations:
Concentration of THIOFESTERMET in the test solutions (mg/L)
See Table below in window "Any other information on materials and methods including tables".
Details on test conditions:
Mortality and sublethal effects at each concentration recorded at: 0, 2, 4, 24, 48, 72 and 96h.
Reference substance (positive control):
no

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
LC50
Effect conc.:
> 34.4 mg/L
Nominal / measured:
meas. (initial)
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
> 32.7 mg/L
Nominal / measured:
meas. (initial)
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
72 h
Dose descriptor:
LC50
Effect conc.:
> 32.6 mg/L
Nominal / measured:
meas. (initial)
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
> 33 mg/L
Nominal / measured:
meas. (initial)
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Results with reference substance (positive control):
- Results with reference substance valid? yes
- Mortality: no
- LC100: >= 33.0 mg / l

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
No observed effect after 96 h:>= 33.0 mg/l.
Not classified.