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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Acute Toxicity: oral

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Administrative data

Endpoint:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1995
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data

Data source

Reference
Reference Type:
review article or handbook
Title:
Unnamed
Year:
1995
Report date:
1995

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 401 (Acute Oral Toxicity)
GLP compliance:
not specified
Test type:
other: not specified

Test material

Constituent 1
Reference substance name:
1H-Imidazole-1-ethanol, 4,5-dihydro-, 2-nortall-oil alkyl derivs.
EC Number:
263-171-2
EC Name:
1H-Imidazole-1-ethanol, 4,5-dihydro-, 2-nortall-oil alkyl derivs.
Cas Number:
61791-39-7
Molecular formula:
UVCB. Not applicable (a generic molecular formula cannot be provided for this specific UVCB substance).Average Empirical Formula: C H N O 22 40-44
IUPAC Name:
1H-Imidazole-1-ethanol, 4,5-dihydro-, 2-nortall-oil alkyl derivs
Test material form:
liquid
Specific details on test material used for the study:
Alkyl imidazoline is a UVCB material contininag structures which are very similar to the substance under test.
There are no studies for this substance and due to a ban on animal testing for such end points, it is necessry to try to find an alternative way of making an assessment using other substances that have been tested in-vivo in previous years.

Test animals

Species:
rat
Strain:
Sprague-Dawley
Sex:
male/female

Results and discussion

Effect levelsopen allclose all
Sex:
female
Dose descriptor:
LD50
Effect level:
> 1 213 - <= 2 546 mg/kg bw
Based on:
test mat.
Sex:
male
Dose descriptor:
LD50
Effect level:
>= 1 259 - <= 2 638 mg/kg bw
Sex:
male/female
Dose descriptor:
LD50
Effect level:
>= 1 515 - <= 2 349 mg/kg bw

Any other information on results incl. tables

Alkyl imidazoline, 1-(2-Hydroxyethyl)-2-alkyl*-2-imidazoline (*as in fatty acids of tall oil), has been tested in the following acute toxicity

tests. With Sprague-Dawley rats (MRID No. 42293001), alkyl imidazoline demonstrated an acute oral LD of 1948 (1259-2638) mg/kg body weight 50 for male rats, 1880 (1213-2546) mg/kg for female rats, and 1932 (1515 - 2349) mg/kg for combined sexes.

Applicant's summary and conclusion

Interpretation of results:
Category 4 based on GHS criteria
Conclusions:
Alkyl imidazoline is a UVCB material contininag structures which are very similar to the substance under test.
There are no studies for this substance and due to a ban on animal testing for such end points, it is necessry to try to find an alternative way of making an assessment using other substances that have been tested in-vivo in previous years.