Registration Dossier
Registration Dossier
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EC number: 212-472-7 | CAS number: 821-06-7
Genetic toxicity: in vitro
Administrative data
- Endpoint:
- in vitro gene mutation study in bacteria
- Remarks:
- Type of genotoxicity: gene mutation
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Basic data given
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 991
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Ames test using Salmonella typhimurium strains TA100 and TA98 with and without metabolic activation (S9 rat or hamster) was performed.
- GLP compliance:
- not specified
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- (E)-1,4-dibromobut-2-ene
- EC Number:
- 212-472-7
- EC Name:
- (E)-1,4-dibromobut-2-ene
- Cas Number:
- 821-06-7
- Molecular formula:
- C4 H6 Br2
- IUPAC Name:
- 1,4-dibromobut-2-ene
- Details on test material:
- - Name of test material (as cited in study report): (E)-1,4-Dibromo-2-butene
Constituent 1
Method
- Target gene:
- his
Species / strain
- Species / strain / cell type:
- other: Salmonella typhimurium strans TA100 and TA98
- Additional strain / cell type characteristics:
- not specified
- Metabolic activation:
- with and without
- Metabolic activation system:
- induced male Sprague Dawley rat liver S9 and induced male Syrian hamster liver S9
- Test concentrations with justification for top dose:
- 0, 0.1, 0.3, 1, 3.3, 10, 20, 33, 50, 67, 75, 100 µg/plate
- Vehicle / solvent:
- - Vehicle(s)/solvent(s) used: DMSO
Controls
- Untreated negative controls:
- no
- Negative solvent / vehicle controls:
- not specified
- True negative controls:
- not specified
- Positive controls:
- yes
- Positive control substance:
- not specified
- Details on test system and experimental conditions:
- METHOD OF APPLICATION: preincubation
DURATION
- No data
SELECTION AGENT (mutation assays):
- No data
NUMBER OF REPLICATIONS:
- No data
DETERMINATION OF CYTOTOXICITY
- Method: relative total growth
METABOLIC ACTIVATION
- 30 % induced male liver S) - Evaluation criteria:
- No data
- Statistics:
- No data
Results and discussion
Test results
- Species / strain:
- other: TA100 and TA98
- Metabolic activation:
- with and without
- Genotoxicity:
- positive
- Remarks:
- data see attached Table
- Cytotoxicity / choice of top concentrations:
- other: 100 µg/plate is slightly toxic
- Vehicle controls validity:
- not specified
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Additional information on results:
- No data
- Remarks on result:
- other: all strains/cell types tested
- Remarks:
- Migrated from field 'Test system'.
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information):
positive
The test substance trans-1,4 -Dibromo-2 -butene is positive in Salmonella typhimurium strains TA100 and TA98.
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