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Diss Factsheets
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EC number: 201-108-2 | CAS number: 78-35-3
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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Genetic toxicity: in vitro
Administrative data
- Endpoint:
- in vitro gene mutation study in bacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP and test guideline compliant study.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)
- GLP compliance:
- yes (incl. QA statement)
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- 1,5-dimethyl-1-vinylhex-4-enyl isobutyrate
- EC Number:
- 201-108-2
- EC Name:
- 1,5-dimethyl-1-vinylhex-4-enyl isobutyrate
- Cas Number:
- 78-35-3
- Molecular formula:
- C14H24O2
- IUPAC Name:
- 1,5-dimethyl-1-vinylhex-4-enyl isobutyrate
- Reference substance name:
- Unknown impurities
- Molecular formula:
- not applicable
- IUPAC Name:
- Unknown impurities
- Test material form:
- liquid
- Details on test material:
- Sponsor's Identification: Linalyl Isobutyrate
Description: Colourless liquid
Chemical name: 3,7-Dimethyl-1,6-octadien-3-yl 2-methyl propanoate
Storage conditions: Approximately 4 °C in the dark
Constituent 1
impurity 1
Method
Species / strain
- Species / strain / cell type:
- S. typhimurium TA 1535, TA 1537, TA 98, TA 100 and TA 102
- Details on mammalian cell type (if applicable):
- Not applicable
- Additional strain / cell type characteristics:
- not specified
- Metabolic activation:
- with and without
- Metabolic activation system:
- S9-fraction; S9 fraction prepared from liver homogenates of male Sprague-Dawley rats induced with three consecutive daily oral doses of phenobarbitone/β-naphthoflavone (80/100 mg/kg bw/day)
- Test concentrations with justification for top dose:
- Preliminary Toxicity Test:
- 0.15, 0.5, 1.5, 5, 15, 50, 150, 500, 1500 and 5000 µg/plate in TA100 strain, with and without S9 mix using the direct plate incorporation method
Mutation Test- Experiment 1 (Range-finding Test):
- 100, 333, 1000, 2500 and 5000 µg/plate in all tester strains, with and without S9 mix using the direct plate incorporation method
Mutation Test- Experiment 2 (Main Test):
- 100, 333, 1000, 2500 and 5000 µg/plate in all tester strains, with and without S9 mix using the direct plate incorporation method - Vehicle / solvent:
- Vehicle(s)/solvent(s) used: Dimethyl sulfoxide (DMSO)
- Justification for choice of solvent/vehicle: The test material was immiscible in sterile distilled water at 50 mg/mL but was fully miscible in DMSO at the same concentration in solubility checks performed in-house. DMSO was therefore selected as the vehicle.
- Test substance preparation: The test material was accurately weighed and approximate half-log dilutions prepared in DMSO by mixing on a vortex mixer on the day of each experiment. Formulated concentrations were adjusted to allow for the stated water/impurity content (1.6 %) of the test material. Prior to use, the solvent was dried using molecular sieves (sodium alumino-silicate) i.e., 2 mm pellets with a nominal pore diameter of 4 x 10^-4 microns.
Controlsopen allclose all
- Untreated negative controls:
- no
- Negative solvent / vehicle controls:
- yes
- Remarks:
- DMSO
- True negative controls:
- no
- Positive controls:
- yes
- Positive control substance:
- other: N-ethyl-N'-nitro-N-nitrosoguanidine: 3 µg/plate for TA100 and 5µg/plate for TA1535; 9-Aminoacridine: 80 µg/plate for TA1537; 4-Nitroquinoline-1-oxide: 0.2 µg/plate for TA98; Mitomycin C: 0.5 µg/plate for TA102
- Remarks:
- without S9-mix
- Untreated negative controls:
- no
- Negative solvent / vehicle controls:
- yes
- Remarks:
- DMSO
- True negative controls:
- no
- Positive controls:
- yes
- Positive control substance:
- other: 2-Aminoanthracene: 1 µg/plate for TA100, 2 µg/plate for TA1535 and TA1537; Benzo(a)pyrene: 5 µg/plate for TA98; 1,8-dihydroxyanthraquinone: 10 µg/plate for TA102
- Remarks:
- with S9-mix
- Details on test system and experimental conditions:
- SOURCE OF TEST SYSTEM: Salmonella typhimurium strains were obtained from the University of California at Berkeley on culture discs on 4 August 1995 and were stored at -196°C in a Statebourne liquid nitrogen freezer, model SXR 34.
METHOD OF APPLICATION: In agar (plate incorporation)
DURATION
- Incubation period: Plates were incubated at 37 °C for approximately 48 h
NUMBER OF REPLICATIONS:
- Preliminary Toxicity Test: Single plate/dose for treatment and vehicle control
- Experiment 1 (Range-finding Test) and Experiment 2 (Main Test): 3 plates/dose for treatment, vehicle and positive controls
DETERMINATION OF CYTOTOXICITY
- Method: Toxicity was determined by growth of the bacterial background lawn.
OTHER:
- Revertant colonies were counted using a Domino colony counter. - Evaluation criteria:
- The test material may be considered positive in this test system if the following criteria are met:
The test material should have induced a reproducible, dose-related and statistically (Dunnett's method of linear regression (5)) significant increase in the revertant count in at least one strain of bacteria. - Statistics:
- no data
Results and discussion
Test results
- Species / strain:
- S. typhimurium TA 1535, TA 1537, TA 98, TA 100 and TA 102
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity, but tested up to precipitating concentrations
- Vehicle controls validity:
- valid
- Untreated negative controls validity:
- not applicable
- Positive controls validity:
- valid
- Remarks on result:
- other: all strains/cell types tested
- Remarks:
- Migrated from field 'Test system'.
Applicant's summary and conclusion
- Conclusions:
- Under the test conditions, Linalyl Isobutyrate is not considered as mutagenic in S. typhimurium TA 1535, TA 1537, TA 98 and TA 100 & TA 102 strains.
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