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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Reference
Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1991
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
Deviations:
not specified
GLP compliance:
not specified
Specific details on test material used for the study:
Not available
Analytical monitoring:
yes
Vehicle:
no
Details on test solutions:
Nominal test solutions prepared at 0.3, 1.0, 3.0, 10.0, 30.0, 100.0 mg/L
Test organisms (species):
Daphnia magna
Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
48 h
Hardness:
231 mg/L as CaCO3
Nominal and measured concentrations:
Nominal concentrations: 0.3, 1.0, 3.0, 10.0, 30.0, 100.0 mg/L
Measured concentrations: <0.01, 0.01, 0.031. 0.039, 0.1, 0.343 mg/L
Reference substance (positive control):
not specified
Key result
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
> 100 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
> 0.343 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
test mat.
Basis for effect:
mortality
Validity criteria fulfilled:
not specified
Conclusions:
The test material was determined to have a 48 hour EC50 >100 mg/l (nominal concentration) in an acute toxicity study on Daphnia magna. The 48 EC50 based on measured concentration is >0.343 mg/L

Description of key information

The test material was determined to have a 48 hour EC50 >100 mg/l (nominal concentration) in an acute toxicity study on Daphnia magna. The 48 EC50 based on measured concentration is >0.343 mg/L.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
0.343 mg/L

Additional information