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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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
1986
Report date:
1986
Reference Type:
other company data
Title:
Unnamed
Year:
1974
Report date:
1974

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 401 (Acute Oral Toxicity)
Principles of method if other than guideline:
A dose of 15000 mg/kg bw of the test substance was applied once to 10 female Wistar rats per gavage. The animals were inspected several times on the day of administration, and twice daily during the following 14-day observation
period (once on Weekends and bank holidays). During inspections, the type, onset, duration, and intensity of clinical signs were recorded and dead animals removed if necessary. The animals were individually weighed at application at the end of the 14-day observation period.
GLP compliance:
not specified
Test type:
standard acute method
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
1,8-bis[(4-methylphenyl)amino]anthraquinone
EC Number:
201-398-0
EC Name:
1,8-bis[(4-methylphenyl)amino]anthraquinone
Cas Number:
82-16-6
Molecular formula:
C28H22N2O2
IUPAC Name:
1,8-bis[(4-methylphenyl)amino]-9,10-dihydroanthracene-9,10-dione
Specific details on test material used for the study:
Purity: technically pure

Test animals

Species:
rat
Strain:
Wistar
Sex:
female
Details on test animals or test system and environmental conditions:
The acute toxicity experiment was carried out with SPF-bred Wistar rats (strain Wistar TNO W 74). At the start of study the female rats were about 14 weeks old and females 14weeks.
The rats were housed in groups of five animals each under conventional conditions in Makrolon Type-III cages on dust-free wood granules; they were exposed to a room temperature of 22 ± 1.5° C, a 12-hour light/dark cycle (artificial light from 7 a.m. to 7 p.m. CET), and relative humidity of about 60 ± 5 %.
During the study period the animals received feed and tap water ad libitum.
The animals were inspected several times on the day of administration, and twice daily during the following 14-day observation period (once on Weekends and bank holidays). During inspections, the type, onset, duration, and intensity of clinical signs were recorded and dead animals removed if necessary. The animals were individually weighed at application and at the end of the 14-day observation period.

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
peanut oil
Details on oral exposure:
The substance was formulated inpeanut oil and once administered to 10 female animals at a constant application volume of 30 ml/kg body weight. A rigid metal gavage was used for that purpose. The animals were inspected several times on the day of administration, and twice daily during the following 14-day observation period (once on Weekends and bank holidays). During inspections, the type, onset, duration, and intensity of clinical signs were recorded and dead animals removed if necessary. The animals were individually weighed at application and at the end of the 14-day observation period.
Doses:
15000 mg/kg bw
No. of animals per sex per dose:
10 female rats/dose
Control animals:
no
Details on study design:
A dose of 15000 mg/kg bw of the test substance was applied once to 10 female Wistar rats per gavage. The animals were inspected several times on the day of administration, and twice daily during the following 14-day observation
period (once on Weekends and bank holidays). During inspections, the type, onset, duration, and intensity of clinical signs were recorded and dead animals removed if necessary. The animals were individually weighed at application at the end of the 14-day observation period.

Results and discussion

Effect levels
Key result
Sex:
female
Dose descriptor:
discriminating dose
Effect level:
15 000 mg/kg bw
Based on:
test mat.
Mortality:
None of the animals died.
Clinical signs:
The dose of 15000 mg/kg body eight, which was administered once, was tolerated without symptoms.
Body weight:
Body weight gain was not indluenced.

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
The LD50 is greater than 15000 mg/kg bw (discriminating dose).
Executive summary:

A dose of 15000 mg/kg bw of the test substance was applied once to 10 female Wistar rats per gavage. The animals were inspected several times on the day of administration, and twice daily during the following 14-day observation period. The dose of 15000 mg/kg body weight, which was administered once, was tolerated without symptoms by all female animals. The LD50 is greater than 15000 mg/kg bw (discriminating dose).