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EC number: 907-873-5 | CAS number: -
- 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
Genetic toxicity: in vitro
Administrative data
- Endpoint:
- in vitro gene mutation study in bacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 22 October 2020 - 19 November 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 021
- Report date:
- 2021
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Version / remarks:
- 2020
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- Reaction mass of 3,7-dimethyloct-6-en-1-yl propanoate and 3,7-dimethyloctyl propanoate
- EC Number:
- 907-873-5
- Molecular formula:
- C13H24O2 C13H26O2
- IUPAC Name:
- Reaction mass of 3,7-dimethyloct-6-en-1-yl propanoate and 3,7-dimethyloctyl propanoate
- Test material form:
- liquid
1
Method
- Target gene:
- Salmonella typhimurium: Histidine locus
Escherichia coli: Tryptophan locus
Species / strainopen allclose all
- Species / strain / cell type:
- E. coli WP2 uvr A
- Species / strain / cell type:
- S. typhimurium TA 1535, TA 1537, TA 98 and TA 100
- Metabolic activation:
- with and without
- Metabolic activation system:
- Type and composition of metabolic activation system:
- source of S9: Trinova Biochem GmbH, Giessen, Germany
- method of preparation of S9 mix: Rat liver microsomal enzymes (S9 homogenate) were prepared from male Sprague Dawley rats that had been injected intraperitoneally with Aroclor 1254 (500 mg/kg body weight). S9-mix was prepared immediately before use and kept refrigerated. S9-mix contained per 10 mL: 30 mg NADP (Randox Laboratories Ltd., Crumlin, United Kingdom) and 15.2 mg glucose-6-phosphate (Roche Diagnostics, Mannheim, Germany) in 5.5 mL Milli-Q water (Millipore Corp., Bedford, MA., USA); 2 mL 0.5 M sodium phosphate buffer pH 7.4; 1 mL 0.08 M MgCl2 solution (Merck); 1 mL 0.33 M KCl solution (Merck). The above solution was filter (0.22 μm)-sterilized.
- concentration of S9: To 9.5 mL of S9-mix components 0.5 mL S9-fraction was added (5% (v/v) S9-fraction) to complete the S9-mix. - Test concentrations with justification for top dose:
- Dose-range finding test: 1.7, 5.4, 17, 52, 164, 512, 1600 and 5000 μg/plate
First experiment: 17, 52, 164, 512, 1600 and 5000 μg/plate
Second experiment:
- TA1537, TA98, TA100 and WP2uvrA: 17, 52, 164, 512, 1600 and 5000 μg/plate (without S9-mix); 1.7, 5.4, 17, 52, 164, 512, 1600 and 5000 μg/plate (with S9-mix)
- TA1535: 17, 52, 164, 512, 1600 and 5000 μg/plate (without S9-mix); 1.7, 5.4, 17, 52, 164, 512, 1600 μg/plate (with S9-mix) - Vehicle / solvent:
- - Vehicle used: DMSO
Controlsopen allclose all
- Negative solvent / vehicle controls:
- yes
- Remarks:
- DMSO
- Positive controls:
- yes
- Positive control substance:
- other: 2-aminoanthracene (2AA)
- Remarks:
- With metabolic activation
- Negative solvent / vehicle controls:
- yes
- Remarks:
- DMSO
- Positive control substance:
- 4-nitroquinoline-N-oxide
- 2-nitrofluorene
- sodium azide
- methylmethanesulfonate
- other: ICR-191
- Remarks:
- Without metabolic activation
- Details on test system and experimental conditions:
- NUMBER OF REPLICATIONS:
- Number of cultures per concentration: triplicates
- Number of independent experiments: 2
METHOD OF TREATMENT/ EXPOSURE:
- Test substance in agar (plate incorporation) and preincubation
TREATMENT AND HARVEST SCHEDULE:
- Preincubation period: 30 ± 2 minutes by 70 rpm at 37 ± 1°C in the dark
- Exposure duration/duration of treatment: 48 ± 4 h at 37.0 ± 1.0°C in the dark
- Harvest time after the end of treatment (sampling/recovery times): Not reported
METHODS FOR MEASUREMENT OF CYTOTOXICITY
- Method: the reduction of the bacterial background lawn, the increase in the size of the microcolonies and the reduction of the revertant colonies were observed. - Evaluation criteria:
- A test item is considered negative (not mutagenic) in the test if:
a) The total number of revertants in tester strain TA100 or WP2uvrA is not greater than two times the concurrent control, and the total number of revertants in tester strains TA1535, TA1537 or TA98 is not greater than three times the concurrent control.
b) The negative response should be reproducible in at least one follow up experiment.
A test item is considered positive (mutagenic) in the test if:
a) The total number of revertants in tester strain TA100 or WP2uvrA is greater than two times the concurrent control, or the total number of revertants in tester strains TA1535, TA1537 or TA98 is greater than three times the concurrent control.
b) In case a repeat experiment is performed when a positive response is observed in one of the tester strains, the positive response should be reproducible in at least one follow up experiment.
Results and discussion
Test resultsopen allclose all
- Key result
- Species / strain:
- E. coli WP2 uvr A
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 1537
- Remarks:
- First experiment
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 1537
- Remarks:
- Second experiment
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- In the absence and presence of S9-mix at 164 and 512 μg/plate, respectively.
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 1535
- Remarks:
- First experiment
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 1535
- Remarks:
- Second experiment
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- In the absence and presence of S9-mix at 1600 and 164 μg/plate, respectively.
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 100
- Remarks:
- First experiment
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- at a dose level of 5000 μg/plate in the presence of S9-mix
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 100
- Remarks:
- Second experiment
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- In the absence and presence of S9-mix at 164 μg/plate.
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 98
- Remarks:
- First mutation experiment
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity nor precipitates, but tested up to recommended limit concentrations
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 98
- Remarks:
- Second experiment
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- cytotoxicity
- Remarks:
- In the absence and presence of S9-mix at 512 μg/plate.
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Additional information on results:
- Dose-range finding test/First mutation experiment:
- Precipitation of the test item on the plates was not observed in any tester strain.
- Cytotoxicity, as evidenced by a decrease in the number of revertants and/or a reduction of the bacter ial background lawn, was observed in tester strain TA100 and TA1537 at a dose level of 5000 μg/plate, in respectively the presence and absence of S9-mix. In strain TA1537 (presence of S9-mix), fluctuations in the number of revertant colonies below the laboratory historical control data range were observed. However, since no dose-relationship was observed, these reductions are not considered to be caused by toxicity of the test item. It is more likely these reductions are caused by an incidental fluctuation in the number of revertant colonies.
- In the direct plate test, no increase in the number of revertants was observed upon treatment
with the test item under all conditions tested.
Second experiment:
- Precipitation of the test item on the plates was not observed any tester strain.
- Cytotoxicity, as evidenced by a decrease in the number of revertants, reduction of the bacterial background lawn and/or the presence of microcolonies, was observed in all tester strains in the absence and presence of S9-mix, except in WP2uvrA.
- In the pre-incubation test, no increase in the number of revertants was observed upon treatment with the test item under all conditions tested.
Any other information on results incl. tables
Table 1. Dose-Range Finding Test: Mutagenic Response of Citronellyl Propionate in the Salmonella typhimurium Reverse Mutation Assay and in the Escherichia coli Reverse Mutation Assay
Direct Plate Assay
(µg/plate) |
| ||
|
|
|
|
Without S9-mix
Positive control | 781 | ± | 51 |
| 1092 | ± | 28 |
|
|
|
|
|
Solvent control | 85 | ± | 1 |
| 15 | ± | 5 |
|
|
|
|
|
1.7 | 77 | ± | 26 |
| 12 | ± | 3 |
|
|
|
|
|
5.4 | 79 | ± | 15 |
| 15 | ± | 7 |
|
|
|
|
|
17 | 86 | ± | 11 |
| 22 | ± | 14 |
|
|
|
|
|
52 | 87 | ± | 4 |
| 18 | ± | 2 |
|
|
|
|
|
164 | 90 | ± | 13 |
| 12 | ± | 2 |
|
|
|
|
|
512 | 87 | ± | 7 |
| 19 | ± | 6 |
|
|
|
|
|
1600 | 73 | ± | 5 |
| 18 | ± | 7 |
|
|
|
|
|
5000 | 64 | ± | 16 | n NP | 19 | ± | 1 | n NP |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
With S9-mix
Positive control | 1345 | ± | 82 |
| 260 | ± | 10 |
|
|
|
|
|
Solvent control | 75 | ± | 19 |
| 23 | ± | 3 |
|
|
|
|
|
1.7 | 77 | ± | 5 |
| 18 | ± | 8 |
|
|
|
|
|
5.4 | 81 | ± | 4 |
| 25 | ± | 3 |
|
|
|
|
|
17 | 75 | ± | 13 |
| 21 | ± | 1 |
|
|
|
|
|
52 | 84 | ± | 12 |
| 18 | ± | 2 |
|
|
|
|
|
164 | 88 | ± | 8 |
| 20 | ± | 3 |
|
|
|
|
|
512 | 78 | ± | 12 |
| 16 | ± | 3 |
|
|
|
|
|
1600 | 65 | ± | 2 | n | 17 | ± | 6 |
|
|
|
|
|
5000 | 3 | ± | 2 | m NP | 19 | ± | 7 | n NP |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NP | No precipitate |
m | Bacterial background lawn moderately reduced |
n | Normal bacterial background lawn |
Table 2. Experiment 1: Mutagenic Response of Citronellyl Propionate in the Salmonella typhimurium Reverse Mutation Assay
Direct Plate Assay
(µg/plate) |
| ||
|
|
|
|
Without S9-mix
Positive control | 834 | ± | 55 |
| 1015 | ± | 144 |
| 1042 | ± | 70 |
|
Solvent control | 8 | ± | 3 |
| 2 | ± | 2 |
| 19 | ± | 3 |
|
17 | 7 | ± | 3 |
| 5 | ± | 1 |
| 9 | ± | 5 |
|
52 | 13 | ± | 2 |
| 5 | ± | 4 |
| 12 | ± | 2 |
|
164 | 7 | ± | 3 |
| 4 | ± | 2 |
| 7 | ± | 4 |
|
512 | 8 | ± | 0 |
| 5 | ± | 2 |
| 7 | ± | 3 |
|
1600 | 10 | ± | 5 |
| 4 | ± | 1 |
| 9 | ± | 5 |
|
5000 | 7 | ± | 4 | n NP | 1 | ± | 1 | n NP | 14 | ± | 5 | n NP |
|
|
|
|
|
|
|
|
|
|
|
|
|
With S9-mix
Positive control | 259 | ± | 35 |
| 343 | ± | 27 |
| 1409 | ± | 176 |
|
Solvent control | 9 | ± | 1 |
| 3 | ± | 2 |
| 8 | ± | 2 |
|
17 | 16 | ± | 3 |
| 6 | ± | 1 |
| 17 | ± | 6 |
|
52 | 12 | ± | 5 |
| 3 | ± | 2 |
| 19 | ± | 5 |
|
164 | 4 | ± | 1 |
| 1 | ± | 2 |
| 17 | ± | 3 |
|
512 | 5 | ± | 2 |
| 0 | ± | 1 |
| 17 | ± | 6 |
|
1600 | 8 | ± | 4 |
| 2 | ± | 2 |
| 21 | ± | 2 |
|
5000 | 9 | ± | 6 | n NP | 3 | ± | 3 | n NP | 11 | ± | 5 | n NP |
|
|
|
|
|
|
|
|
|
|
|
|
|
NP | No precipitate |
n | Normal bacterial background lawn |
Table 3. Experiment 2: Mutagenic Response of Citronellyl Propionate in the Salmonella typhimurium Reverse Mutation Assay and in the Escherichia coli Reverse Mutation Assay
Pre-incubation Assay
(µg/plate) |
| ||||
|
|
|
|
|
|
Without S9-mix
Positive control | 513 | ± | 368 |
| 170 | ± | 4 |
| 1522 | ± | 184 |
| 703 | ± | 63 |
| 1296 | ± | 40 |
|
Solvent control | 9 | ± | 2 |
| 4 | ± | 3 |
| 14 | ± | 3 | 103 | ± | 8 |
| 17 | ± | 8 | i | |
17 | 8 | ± | 4 |
| 1 | ± | 2 |
| 10 | ± | 2 |
| 55 | ± | 28 | s | 9 | ± | 2 |
|
52 | 12 | ± | 4 |
| 2 | ± | 2 | n | 9 | ± | 1 |
| 77 | ± | 6 | s | 11 | ± | 6 |
|
164 | 6 | ± | 5 |
| 2 | ± | 2 | s | 9 | ± | 4 | n | 55 | ± | 14 | m | 12 | ± | 5 |
|
512 | 10 | ± | 3 | n | 9 | ± | 6 | m | 9 | ± | 1 | s | 72 | ± | 18 | m | 17 | ± | 4 |
|
1600 | 5 | ± | 1 | s | 3 | ± | 2 | m | 4 | ± | 1 | s | 52 | ± | 18 | m | 14 | ± | 3 |
|
5000 | 7 | ± | 3 | s NP | 6 | ± | 9 | m NP | 4 | ± | 4 | s NP | 52 | ± | 10 | m NP | 15 | ± | 3 | n NP |
With S9-mix
Positive control | 211 | ± | 13 |
| 135 | ± | 18 |
| 587 | ± | 43 |
| 2120 | ± | 104 |
| 481 | ± | 23 |
|
Solvent control | 9 | ± | 2 |
| 4 | ± | 1 |
| 18 | ± | 3 |
| 84 | ± | 9 |
| 12 | ± | 6 | |
Positive control |
| - |
|
| 201 | ± | 30 | * | 648 | ± | 18 | * | 1326 | ± | 60 | * |
| - |
|
|
Solvent control |
| - |
|
| 2 | ± | 2 | * | 15 | ± | 4 | * | 87 | ± | 8 | * |
| - |
|
|
1.7 | 6 | ± | 4 |
| 4 | ± | 2 | * | 13 | ± | 3 | * | 74 | ± | 5 | * |
| - |
|
|
5.4 | 7 | ± | 4 |
| 3 | ± | 2 | * | 19 | ± | 5 | * | 83 | ± | 16 | * |
| - |
|
|
17 | 7 | ± | 3 |
| 3 | ± | 3 |
| 20 | ± | 2 |
| 85 | ± | 5 |
| 18 | ± | 4 |
|
52 | 8 | ± | 6 | n | 8 | ± | 4 |
| 20 | ± | 2 |
| 91 | ± | 10 | n | 23 | ± | 6 |
|
164 | 6 | ± | 2 | s | 4 | ± | 3 | n | 13 | ± | 2 | n | 51 | ± | 12 | m | 16 | ± | 2 |
|
512 | ± | e MC | 0 | ± | 0 | a | 0 | ± | 0 | a | 0 | ± | 0 | a | 15 | ± | 0 |
| ||
1600 | 0 | ± | 0 | a NP | 0 | ± | 0 | a | 0 | ± | 0 | a | 0 | ± | 0 | a | 12 | ± | 6 |
|
5000 |
| - |
|
| 0 | ± | 0 | a NP | 0 | ± | 0 | a NP | 0 | ± | 0 | a NP | 22 | ± | 4 | n NP |
MC | Microcolonies |
MP | Moderate Precipitate |
NP | No precipitate |
a | Bacterial background lawn absent |
e | Bacterial background lawn extremely reduced |
i | One Plate infected: mean of two plates |
m | Bacterial background lawn moderately reduced |
n | Normal bacterial background lawn |
s | Bacterial background lawn slightly reduced |
* | Data from an additional experiment |
- | Not tested |
Applicant's summary and conclusion
- Conclusions:
- The substance is not mutagenic in the Salmonella typhimurium reverse mutation assay and in the Escherichia coli reverse mutation assay performed according to OECD 471 (2020).
- Executive summary:
The substance is tested in the Ames test (OECD TG 471) following GLP. The test was performed in two independent experiments, at first a direct plate assay was performed and secondly a pre-incubation assay. In the first mutation experiment, the test item was tested up to concentrations of 5000 μg/plate in the strains TA100, TA1535, TA1537, TA98, and WP2uvrA. The test item did not precipitate on the plates at this dose level. Cytotoxicity was observed in tester strain TA100 at a dose level of 5000 μg/plate in the presence of S9-mix, and in tester strain TA1537 at a dose level of 5000 μg/plate in the absence of S9-mix. In the second mutation experiment, the test item was tested up to concentrations of 5000 μg/plate in the tester strains TA1537, TA98, TA100 and WP2uvrA in the pre-incubation assay. Tester strain TA1535 was exposed to concentrations up to 5000 μg/plate in the absence of S9-mix and 1600 μg/plate in the presence of S9-mix. The test item did not precipitate on the plates at this dose level. Cytotoxicity was observed in all tester strains in the absence and presence of S9-mix, except in WP2uvrA. The negative and strain-specific positive control values were within the laboratory historical control data ranges indicating that the test conditions were adequate and that the metabolic activation system functioned properly. In conclusion, based on the results of this study it is concluded that Citronellyl Propionate is not mutagenic in the Salmonella typhimurium reverse mutation assay and in the Escherichia coli reverse mutation assay.
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