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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
1,2,4,5-tetramethyl-1H-imidazole
EC Number:
217-100-7
EC Name:
1,2,4,5-tetramethyl-1H-imidazole
Cas Number:
1739-83-9
Molecular formula:
C7H12N2
IUPAC Name:
tetramethyl-1H-imidazole

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
not specified

Results and discussion

Effect concentrations
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
>= 100 mg/L
Details on results:

The 48-hours EC50 value was not determined because the highest tested concentration of 1,2,4,5-tetramethyl-1H-imidazole, 100 mg.L-1, caused only 30% immobility to the organisms during 48 hours of exposure. Therefore the 48-hours EC50 value of the tested item is higher than 100 mg.L-1.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
EC50>100 mg.L-1