Registration Dossier
Registration Dossier
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EC number: - | CAS number: 75045-07-7
Acute Toxicity: dermal
Administrative data
- Endpoint:
- acute toxicity: dermal
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- other information
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: secondary literature - U.S. Environmental Protection Agency, Hazard characterisation document sponsored Chemical: 2H-Benzimidazole-2-thione, 1,3-dihydro-, 4(or 5)-methyl-,zinc salt
Data source
Reference
- Title:
- Unnamed
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 402 (Acute Dermal Toxicity)
- Principles of method if other than guideline:
- Test material was moistened with arachis oil and applied to an area of shorn skin. All test animals received a single dermal exposure of 2,000 mg/kg b.w. The test material was held in place by surgical gauze and self-adhesive bandage. The semi-occlusive wrap was removed after 24 hours and the excess material was wiped from the test animal.
Animals were examined for mortality, systemic toxicity, signs of dermal irritation, weight gain and necropsy. - GLP compliance:
- yes
- Test type:
- standard acute method
- Limit test:
- yes
Test material
- Reference substance name:
- 1,3-dihydro-4(or 5)-methyl-2H-benzimidazole-2-thione, zinc salt
- EC Number:
- 262-872-0
- EC Name:
- 1,3-dihydro-4(or 5)-methyl-2H-benzimidazole-2-thione, zinc salt
- Cas Number:
- 61617-00-3
- Molecular formula:
- C8H8N2S.1/2Zn
- IUPAC Name:
- Zinc bis[4(or 5)-methyl-2-thioxo-2,3-dihydrobenzimidazol-1-ide]
- Details on test material:
- methyl-2-mercaptobenzimidazole, zinc salt, purity ~ 95%
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
Administration / exposure
- Type of coverage:
- semiocclusive
- Vehicle:
- arachis oil
- Duration of exposure:
- 24 hours
- Doses:
- 2000 mg/kg bw
- No. of animals per sex per dose:
- 10 male/female animals
- Control animals:
- not required
Results and discussion
Effect levels
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- > 2 000 mg/kg bw
- Based on:
- test mat.
Applicant's summary and conclusion
- Interpretation of results:
- practically nontoxic
- Remarks:
- Migrated information
- Executive summary:
Test material was moistened with arachis oil and applied to an area of shorn skin. All test animals received a single dermal exposure of 2,000 mg/kg b.w. The test material was held in place by surgical gauze and self-adhesive bandage. The semi-occlusive wrap was removed after 24 hours and the excess material was wiped from the test animal.
LD50 > 2000 mg/kg bw. There were no deaths, no signs of systemic toxicity, no signs of dermal irritation and all animals showed expected weight gain. No abnormalities were noted at necropsy.
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