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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Body responsible for the test

Data source

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

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: OECD GUIDELINE 202 (1984) EEC Directive 84/449 (1984) - Annex V - Method C2
Deviations:
not specified
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other: saturated solution obtained was used as such and diluted (100% to 25%)

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
not specified
Water media type:
freshwater
Total exposure duration:
48 h

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
> 0.05 mg/L
Nominal / measured:
nominal
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
> 0.05 mg/L
Nominal / measured:
nominal
Duration:
48 h
Dose descriptor:
NOEC
Effect conc.:
>= 0.05 mg/L
Nominal / measured:
nominal

Any other information on results incl. tables

No auxiliary substance could help to solubilise the test substance.

Considering the low water-solubility of the test substance and in order to prevent impact of solid particles, the test substance was prepared as follows: A 1000 mg/L suspension was stirred for 2 hours; the substance in excess was then filtered. The saturated solution obtained was used as such and diluted (100% to 25%).

 No immobilisation was noted at any of these concentrations.

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
Due to its low water solubility, the test substance is not considered to be toxic to aquatic invertebrates under the condition of the test.