Registration Dossier
Registration Dossier
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EC number: 248-383-5 | CAS number: 27277-00-5
Skin irritation / corrosion
Administrative data
- Endpoint:
- skin irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Remarks:
- Non-GLP, available as unpublished report, restrictions in design and/or reporting, many relevant details are absent in the report including the exposure time and animals were exposed five times
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 979
- Report date:
- 1979
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Rats were dermally exposed to the undiluted test substance under occlusive conditions. Five applications gave a total dose of 0.6 g.
- GLP compliance:
- no
Test material
- Reference substance name:
- 2-amino-6-methyl-4-propyl-1,2,4-triazolo[1,5-a]pyrimidin-5(4H)-one
- EC Number:
- 248-383-5
- EC Name:
- 2-amino-6-methyl-4-propyl-1,2,4-triazolo[1,5-a]pyrimidin-5(4H)-one
- Cas Number:
- 27277-00-5
- Molecular formula:
- C9H13N5O
- IUPAC Name:
- 2-amino-6-methyl-4-propyl-1,2,4-triazolo[1,5-a]pyrimidin-5(4H)-one
- Test material form:
- solid: particulate/powder
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: albino
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Weight at study initiation: 150 - 190 g
Test system
- Type of coverage:
- occlusive
- Preparation of test site:
- not specified
- Vehicle:
- unchanged (no vehicle)
- Amount / concentration applied:
- a total of ca. 0.6 g after 5 applications
Results and discussion
In vivo
Results
- Remarks on result:
- other: see "Irritant / corrosive response data"
- Irritant / corrosive response data:
- No signs of irritation were observed until after the fourth application when all animals developed erythema which persisted until after the fifth application. These effects are consistent with those of a slight skin irritant. In addition all animals began to look thin after the fifth application and one was subdued and another adopted a hunched attitude. One animal was found dead on the last day of the test (ie after a total dose of 0.6 g of test substance). The skin and selected major organs taken from all animals for histopathological examination, confirmed slight local irritation. The only systemic changes found were severe involution of the thymus and the spleen, characteristics of stress. There were no other obvious signs of chemical toxicity to account for the ill health of these animals.
Applicant's summary and conclusion
- Interpretation of results:
- study cannot be used for classification
- Conclusions:
- Slight local irritation was observed.
- Executive summary:
Rats were dermally exposed to the undiluted test substance under occlusive conditions. Five applications gave a total dose of 0.6 g.
Slight local irritation was observed.
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