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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1985
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Well documented study report which meets basic scientific principles

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1985
Report date:
1985

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 401 (Acute Oral Toxicity)
GLP compliance:
no
Test type:
standard acute method
Limit test:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
3-methyl-1-vinyl-1H-imidazolium chloride
EC Number:
236-752-3
EC Name:
3-methyl-1-vinyl-1H-imidazolium chloride
Cas Number:
13474-25-4
Molecular formula:
C6H9N2.Cl
IUPAC Name:
1-ethenyl-3-methyl-2,3-dihydro-1H-imidazol-1-ium chloride

Test animals

Species:
rat
Strain:
Wistar
Sex:
male/female
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: Dr. k. Thomae GmbH, Biberach, Germany
- Weight at study initiation: animals of comparable weight (+/- 20 % of mean weight)
- Fasting period before study: 16 hours
- Housing: in groups of 5 separated by sex
- Diet: Kliba Labordiaet, Klingenthalermuele, Kaiseraugst, Switzerland, ad libitum
- Water:Tap water ad libitum
- Acclimation period: at least 1 week


ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20-24
- Humidity (%): 30-70
- Photoperiod (hrs dark / hrs light): 12/12

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
water
Details on oral exposure:
VEHICLE
- Concentration in vehicle: 50, 38.3, 26.1 % (w/v)

MAXIMUM DOSE VOLUME APPLIED: 10 mL/kg
Doses:
2610, 3830, 5000 mg/kg bw
No. of animals per sex per dose:
5 males, 5 females per dose level
Control animals:
no
Details on study design:
- Duration of observation period following administration: 14 days
- Frequency of observations: twice daily on working days, at least once on weekends and public holidays
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight
Statistics:
LD50 values were determined by probit analysis according to Finney et al. (1971)

Results and discussion

Effect levelsopen allclose all
Sex:
male
Dose descriptor:
LD50
Effect level:
4 660 mg/kg bw
Sex:
female
Dose descriptor:
LD50
Effect level:
5 000 mg/kg bw
Sex:
male/female
Dose descriptor:
LD50
Effect level:
4 780 mg/kg bw
95% CL:
4 220 - 6 830
Mortality:
5000 mg/kg dose level: 4/5 males, 2/5 females
3830 mg/kg dose level: 0/5 males, 1/5 females
2610 mg/kg dose level: 0/5 males, 0/5 females
Clinical signs:
nothing abormal reported
Body weight:
nothing abnormal reported; all animals showed slight to normal body weight gain during the observation period
Gross pathology:
Deceased animals: general congestive hyperemia
Sacrificed animal: nothing abnormal detected

Applicant's summary and conclusion