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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Description of key information

acute oral toxicity: LD50 ca. 11300 mg/kg bw

Key value for chemical safety assessment

Acute toxicity: via oral route

Link to relevant study records
Reference
Endpoint:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Accepted well documented publication
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 401 (Acute Oral Toxicity)
Deviations:
yes
Remarks:
In this range-finding toxicity study in Carworth-Wistar rats (Smyth et al., 1969), a single dose was administered to groups of 5 non-fasted male rats by gastric intubation. Dosages were arranged in a logarhythmic series differing by a factor of 2.
Principles of method if other than guideline:
No information on acclimation period of animals and environmental conditions
GLP compliance:
no
Remarks:
the study was conducted prior GLP
Test type:
standard acute method
Limit test:
no
Species:
rat
Strain:
other: Garworth-Wistar
Sex:
male
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Age at study initiation: 4-5 weeks
- Weight at study initiation: 90-120 g
- Fasting period before study: no
- Diet (e.g. ad libitum): no data; Rockland rat diet, complete


Route of administration:
other: gastric intubation
Vehicle:
not specified
Details on oral exposure:
VEHICLE
suspended in 0.25% agar

MAXIMUM DOSE VOLUME APPLIED: no data

DOSAGE PREPARATION (if unusual):

CLASS METHOD (if applicable)
- Rationale for the selection of the starting dose:
Doses:
single dose
No. of animals per sex per dose:
5
Control animals:
not specified
Details on study design:
- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: no data
- Necropsy of survivors performed: no data
- Other examinations performed: clinical signs, body weight,organ weights, histopathology, other: no data
Statistics:
Based upon mortalities during a 14-day observation period, the most probable LD50 value and its fiducial range are estimated by the method of Thompson using the Tables of Weil. The figures' in parentheses show limits of ± 1.96 standard deviations while the absence of parentheses indicates that no range is calculable because no dosage resulted in fractional mortality.
Sex:
male
Dose descriptor:
LD50
Effect level:
11 300 mg/kg bw
95% CL:
> 7 000 - < 18 300
Mortality:
No data
Clinical signs:
other: No data
Gross pathology:
No data
Interpretation of results:
GHS criteria not met
Endpoint conclusion
Endpoint conclusion:
no adverse effect observed
Dose descriptor:
LD50
Value:
11 300 mg/kg bw

Additional information

Justification for classification or non-classification