Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 225-184-1 | CAS number: 4702-90-3
Acute Toxicity: dermal
Administrative data
- Endpoint:
- acute toxicity: dermal
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1975
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 975
- Report date:
- 1975
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 402 (Acute Dermal Toxicity)
- Deviations:
- yes
- Remarks:
- Body weights were not determined at the end of the study.
- Principles of method if other than guideline:
- Noakes and Sanderson, A method for determining the dermal toxicity of pesticides, Brit. Journ. Ind. Med. 26, 59 (1969)
- GLP compliance:
- no
- Test type:
- standard acute method
- Limit test:
- yes
Test material
- Reference substance name:
- 4-[(1,5-dihydro-3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-ylidene)methyl]-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
- EC Number:
- 225-184-1
- EC Name:
- 4-[(1,5-dihydro-3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-ylidene)methyl]-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
- Cas Number:
- 4702-90-3
- Molecular formula:
- C21H18N4O2
- IUPAC Name:
- 4,4'-methylylidenebis(5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one)
- Details on test material:
- - Physical state: solid
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Wiga
- Weight at study initiation: mean 138 g (male), 137 g (female)
Administration / exposure
- Type of coverage:
- not specified
- Vehicle:
- water
- Details on dermal exposure:
- TEST SITE
- Area of exposure: back of animals, 50cm2
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.6 - 0.8 g
- Concentration: 50%
- Constant volume or concentration used: yes - Duration of exposure:
- one application
- Doses:
- 2500 mg/kg bw
- No. of animals per sex per dose:
- 5
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, gross necropsy
Results and discussion
Effect levels
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- > 2 500 mg/kg bw
- Based on:
- test mat.
- Remarks on result:
- other: No adverse effects were observed.
- Mortality:
- no mortalities
- Clinical signs:
- other: no abnormalities found
- Gross pathology:
- no abnormalities found
- Other findings:
- yellow substance residues on the skin, observed until day 5 post application.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
