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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting 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
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Reference substance name:
(Z)-2-(8-heptadecenyl)-4,5-dihydro-1H-imidazole-1-ethanol
EC Number:
244-501-4
EC Name:
(Z)-2-(8-heptadecenyl)-4,5-dihydro-1H-imidazole-1-ethanol
Cas Number:
21652-27-7
IUPAC Name:
2-(2-heptadec-8-en-1-yl-4,5-dihydro-1H-imidazol-1-yl)ethanol

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.