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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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Analytical monitoring is missing

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2001
Report Date:
2001

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
Deviations:
no
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
48 h

Test conditions

Hardness:
20.8 °dH
Test temperature:
20 °C +/- 1 °C
pH:
8.08-8.28 (initial)
8.21-8.23 (end of test)
Dissolved oxygen:
62.2-63.1 % saturation (initial)
62.8-67.2 % saturation (end of test)
Nominal and measured concentrations:
0.03125, 0.0625, 0.125, 0.25, 0.5, 1 mg/L (nominal concentrations)
No measured concentrations available
Reference substance (positive control):
no

Results and discussion

Effect concentrations
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
0.29 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality
Remarks on result:
other: 95 % CL: 0.26-0.33 mg/L

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
An EC50 of 0.29 mg/L was determined when Daphnia magna was exposed to (Z)-2-(8-Heptadecenyl)-4,5-dihydro-1H-imidazole-1-ethanol for 48 hours.
Executive summary:

An acute daphnia toxicity study according to OECD Guideloine 202 was carried out with (Z)-2-(8-Heptadecenyl)-4,5-dihydro-1H-imidazole-1-ethanol. An EC50 of 0.29 mg/L was determined.