Registration Dossier
Registration Dossier
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EC number: 907-640-8 | CAS number: -
Genetic toxicity: in vivo
Administrative data
- Endpoint:
- in vivo mammalian somatic cell study: cytogenicity / erythrocyte micronucleus
- Remarks:
- Type of genotoxicity: chromosome aberration
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1987
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Comparable to a guideline study and current standards but with limited documentation. Restricted to only one sampling time. Information taken from a secondary source (OECD, 2006).
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 987
Materials and methods
- Principles of method if other than guideline:
- Comparable to a guideline study but with only one sampling time.
- GLP compliance:
- not specified
- Type of assay:
- micronucleus assay
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
- Details on test material:
- Methanol, reagent special grade from Junsei Chemicals Co., no further data.
Test animals
- Species:
- mouse
- Strain:
- ICR
- Sex:
- male
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- No information
- Duration of treatment / exposure:
- single, 24 hours
- Frequency of treatment:
- once
Doses / concentrations
- Remarks:
- Doses / Concentrations:
1050, 2110, 4210 or 8410 mg/kg bw
Basis:
nominal conc.
- No. of animals per sex per dose:
- 6 per dose level and positive control (TEM)
- Control animals:
- yes, concurrent no treatment
- Positive control(s):
- Yes, TEM
Examinations
- Tissues and cell types examined:
- Bone marrow
Results and discussion
Test results
- Sex:
- male
- Genotoxicity:
- negative
- Toxicity:
- not specified
- Vehicle controls validity:
- not specified
- Negative controls validity:
- not examined
- Positive controls validity:
- valid
Any other information on results incl. tables
There was no methanol-related increase in the induction of micronuclei: In treated groups, the mean MN rate varied from 0.5 to 2.2/1000 vs. 1.5/1000 in the neg. control and 45/1000 in the pos. control group.
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information): negative
There were no methanol-related increases in the induction of micronuclei in treated groups.
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