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EC number: - | 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
- Remarks:
- Type of genotoxicity: gene mutation
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 02 October 2011 - 12 October 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 011
- Report date:
- 2011
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Version / remarks:
- 21 July 1997
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)
- Version / remarks:
- 31 may 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Guideline stipulated by the Japanese Ministry of Health, Labour and Welfare, Ministry of Economy, Trade and Industry and Ministry of the Environment.
- Version / remarks:
- revised November 20, 2006
- GLP compliance:
- yes
- Type of assay:
- bacterial reverse mutation assay
Test material
- Test material form:
- solid: particulate/powder
- Details on test material:
- - Physical appearance: Off-white powder
- Test item storage: In refrigerator (2-8°C) in the dark
Constituent 1
Method
- Target gene:
- - S. typhimurium: Histidine gene
- E. coli: Tryptophan gene
Species / strainopen allclose all
- Species / strain / cell type:
- S. typhimurium TA 1535, TA 1537, TA 98 and TA 100
- Species / strain / cell type:
- E. coli WP2 uvr A
- Metabolic activation:
- with and without
- Metabolic activation system:
- Rat liver S9-mix induced with Aroclor.
- Test concentrations with justification for top dose:
- Experiment 1
Without and with S9-mix: 10, 33, 100, 333, 1000, 3330 and 5000 µg/plate
Experiment 2:
Without and with S9-mix: 33, 100, 333, 1000 and 5000 µg/plate - Vehicle / solvent:
- - Solvent used: DMSO
- Justification for choice of solvent: Test compound was soluble in DMSO and DMSO has been accepted and approved by authorities and international guidelines.
- The stock solutions were treated with ultrasonic waves until the test substance had completely dissolved. Test substance concentrations were used within 3 hours after preparation.
Controlsopen allclose all
- Untreated negative controls:
- no
- Negative solvent / vehicle controls:
- yes
- Positive controls:
- yes
- Positive control substance:
- 4-nitroquinoline-N-oxide
- 2-nitrofluorene
- sodium azide
- methylmethanesulfonate
- other: ICR-191 2.5 µg/plate in DMSO for TA1537
- Remarks:
- Without S9
- Untreated negative controls:
- no
- Negative solvent / vehicle controls:
- yes
- Positive controls:
- yes
- Positive control substance:
- other: 2-aminoanthracene in DMSO: 1 μg/plate for TA98 (5 and 10% S9) and for TA100 (5% S9), 2.5 μg/plate for TA1535 (5 and 10% S9) and for TA1537 (5% S9) and for TA100 (10% S9), 5 μg/plate for TA1537 (10% S9), 10 μg/plate for WP2uvrA (5 and 10% S9).
- Remarks:
- With S9
- Details on test system and experimental conditions:
- METHOD OF APPLICATION: in agar (plate incorporation)
DURATION
- Exposure duration: 48 hour
NUMBER OF REPLICATIONS:
- Doses of the test substance were tested in triplicate in each strain. Two independent experiments were conducted.
NUMBER OF CELLS EVALUATED: 10E8 per plate
DETERMINATION 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 recorded.
OTHER EXAMINATIONS:
- The presence of precipitation of the test compound on the plates was determined. - Evaluation criteria:
- A test substance is considered negative (not mutagenic) in the test if:
a) The total number of revertants in tester strain TA100 is not greater than two (2) times the concurrent control, and the total number of revertants in tester strains TA1535, TA1537, TA98 or WP2uvrA is not greater than three (3) times the concurrent vehicle control.
b) The negative response should be reproducible in at least one independently repeated experiment.
A test substance is considered positive (mutagenic) in the test if:
a) The total number of revertants in tester strain TA100 is greater than two (2) times the concurrent control, or the total number of revertants in tester strains TA1535, TA1537, TA98 or WP2uvrA is greater than three (3) times the concurrent vehicle control.
b) In case a positive response will be repeated, the positive response should be reproducible in at least one independently repeated experiment. - Statistics:
- Not performed.
Results and discussion
Test resultsopen allclose all
- Key result
- Species / strain:
- S. typhimurium TA 98
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity, but tested up to precipitating concentrations
- Remarks:
- of 5000 μg/plate
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 100
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity, but tested up to precipitating concentrations
- Remarks:
- of 5000 μg/plate
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 1535
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity, but tested up to precipitating concentrations
- Remarks:
- of 5000 μg/plate
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- S. typhimurium TA 1537
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity, but tested up to precipitating concentrations
- Remarks:
- of 5000 μg/plate
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Key result
- Species / strain:
- E. coli WP2 uvr A
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- no cytotoxicity, but tested up to precipitating concentrations
- Remarks:
- of 5000 μg/plate
- Vehicle controls validity:
- valid
- Positive controls validity:
- valid
- Additional information on results:
- TEST-SPECIFIC CONFOUNDING FACTORS
- Precipitation: Precipitation was observed at dose levels of 1000 µg/plate and upwards.
HISTORICAL CONTROL DATA (with ranges, means and standard deviation and confidence interval (e.g. 95%)
- Positive historical control data:
TA1535 TA1537 TA98
S9-mix - + - + - +
Range 245 - 1270 60 – 943 89 - 1086 82 - 677 401 - 1342 225 - 1656
Mean 887 265 314 374 1016 792
SD 112 111 146 104 133 286
n 1123 1150 1011 1039 1136 1157
TA100 WP2uvrA
S9-mix - + - +
Range 348 - 1417 229 - 1752 138 - 1479 122 - 1248
Mean 950 1103 1074 372
SD 117 261 212 137
n 1153 1170 1023 1047
SD = Standard deviation
n = Number of observations
Historical control data from experiments performed between June 2008 and June 2011.
- Negative (solvent/vehicle) historical control data:
TA1535 TA1537 TA98 TA100 WP2uvrA
S9-mix - + - + - + - + - +
Range 3 - 25 3 – 31 2 - 19 2 - 16 11 - 49 12 - 59 61 - 195 58 - 179 8 - 45 6 - 46
Mean 10 8 5 5 19 24 106 88 22 23
SD 4 3 2 2 5 7 22 21 7 7
n 1208 1216 1073 1098 1191 1208 1224 1221 1090 1105
SD = Standard deviation
n = Number of observations
Historical control data from experiments performed between July 2008 and June 2011.
- The negative and strain-specific positive control values were within our laboratory historical control data ranges indicating that the test conditions were adequate and that the metabolic activation system functioned properly.
ADDITIONAL INFORMATION ON CYTOTOXICITY:
The bacterial background lawn was not reduced at any of the concentrations tested and no biologically relevant decrease in the number of revertants was observed.
Applicant's summary and conclusion
- Conclusions:
- In an AMES test, performed according to OECD 471 guideline and GLP principles, ROC-118 was found not to be mutagenic with or without metabolic activation.
- Executive summary:
An AMES test was performed according to OECD 471 guideline and GLP principles. All bacterial strains (TA98, TA100, TA1535, TA1537 and WP2uvrA) showed negative responses up to and including 5000 µg/plate, i.e. no significant dose-related increase in the number of revertants with or without metabolic activation was seen. No cytotoxicity of the substance was observed. Precipitation of the test substance was observed at concentrations of 1000 µg/plate and upwards. 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.
Based on the results of this study it is concluded that ROC-118 is not mutagenic in the Salmonella typhimurium reverse mutation assay and in the Escherichia coli reverse mutation assay with or without metabolic activation.
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