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EC number: 240-968-3 | CAS number: 16919-19-0
- 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:
- Publication date - 11 May 1981
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 981
- Report date:
- 1981
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Deviations:
- not specified
- GLP compliance:
- not specified
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- disodium;hexafluorosilicon(2-)
- Cas Number:
- 16893-85-9
- Molecular formula:
- Na2SiF6
- IUPAC Name:
- disodium;hexafluorosilicon(2-)
Constituent 1
- Specific details on test material used for the study:
- Name: Sodium hexafluorosilicate
Method
- Target gene:
- Histidine auxotrophic strains of S. typhimurium
Species / strain
- Species / strain / cell type:
- S. typhimurium, other: TA1535, TA100, TA1538, TA98 and TA1537
- Details on mammalian cell type (if applicable):
- provided by Dr. B.N. Ames, University of California, Berkeley, CA (U.S.A.). Two 1535 strains with different histories were used: TA1535 A obtained in 1973 and TA1535 B obtained in 1977.
- Metabolic activation:
- with and without
- Metabolic activation system:
- S9 liver fraction from Aroclor-pretreated rats.
- Test concentrations with justification for top dose:
- 5 doses, up to 3600 µg/plate
- Details on test system and experimental conditions:
- The substance was tested on 2 slightly different minimal media: one (in the following named ZLM medium) is a modified minimal medium for E. coli , and the other is the Vogel-Bonner (VB) medium. ZLM medium contained (in g/l): tri-sodium citrate. 2H20 (0.82), K2HPO4-3H20 (4.60), KH2PO 4 (1.50), (NH4)2SO 4 (1.00), MgSO4.7H20 (0.10) and glucose (17.0). The concentration of citrate was 3.5 times higher in VB medium than in ZLM medium. The concentrations of the other ions are up to 2-fold higher in VB medium.
Results and discussion
Test resultsopen allclose all
- Key result
- Species / strain:
- S. typhimurium TA 1535
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- not specified
- Untreated negative controls validity:
- not specified
- True negative controls validity:
- not examined
- Positive controls validity:
- not specified
- Key result
- Species / strain:
- S. typhimurium TA 1537
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- not specified
- Untreated negative controls validity:
- not specified
- True negative controls validity:
- not examined
- Positive controls validity:
- not specified
- Key result
- Species / strain:
- S. typhimurium TA 98
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- not specified
- Untreated negative controls validity:
- not specified
- True negative controls validity:
- not examined
- Positive controls validity:
- not specified
- Key result
- Species / strain:
- S. typhimurium TA 100
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- not specified
- Untreated negative controls validity:
- not specified
- True negative controls validity:
- not examined
- Positive controls validity:
- not specified
- Key result
- Species / strain:
- S. typhimurium TA 1538
- Metabolic activation:
- with and without
- Genotoxicity:
- negative
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- not specified
- Untreated negative controls validity:
- not specified
- True negative controls validity:
- not examined
- Positive controls validity:
- not specified
Applicant's summary and conclusion
- Conclusions:
- Sodium hexafluorosilicate was found to have no mutagenic potential in the bacterial reverse mutation assay.
- Executive summary:
Sodium hexafluorosilicate was evaluated for the mutagenic potential in a bacterial reverse mutation assay. This method is similar or equivalent to OECD test guideline 471.
5 tester strains of Salmonella typhimurium designated TA1535, TA100, TA1538, TA98 and TA1537, provided by Dr. B.N. Ames, University of California, Berkeley, CA (U.S.A.); were used. Two 1535 strains with different histories, TA1535 A obtained in 1973 and TA1535 B obtained in 1977, were also used for the testing.
Tests were performed using 5 doses, up to 3600 µg/plate, in all 5 strains with and without activation by the S9 liver fraction from Aroclor-pretreated rats. No reverse mutations were observed with any of the tested strains. Hence, sodium hexafluorosilicate can be considered to be not mutagenic in this bacterial reverse mutation assay.
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