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EC number: 212-042-9 | CAS number: 754-05-2
- 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
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Determination of trimethylvinylsilane using LC-UV. The method used was based on Reversed Phase chromatography using acetonitrile/water as mobile phase, direct injection with UV detection. The analytical method was developed as part of preliminary work for the purpose of ecotox testing.
- GLP compliance:
- no
- Type of method:
- flask method
Test material
- Reference substance name:
- Trimethylvinylsilane
- EC Number:
- 212-042-9
- EC Name:
- Trimethylvinylsilane
- Cas Number:
- 754-05-2
- Molecular formula:
- C5H12Si
- IUPAC Name:
- trimethylvinylsilane
1
Results and discussion
Water solubility
- Key result
- Remarks on result:
- not determinable
Any other information on results incl. tables
Analytical method:
Trimethylvinyl silane could be analyzed by LC-UV. A UV absorbance with sufficient intensity at 200 nm could be established due to the vinyl double bond. The test item was stable during the analytical run with the eluens consisting of 90:10 acetonitrile / water.
Experimental findings:
- Sample 1: Trimethylvinyl silane was stable in acetonitrile. The UV-VIS response showed a loss of 14.9% after 5 hours.
- Sample 2: Trimethylvinyl silane was not stable in contact with water (in the AAP medium). The UV-VIS response showed a loss of 98.3% in 7.5 hours.
- Sample 3: Trimethylvinyl silane was nearly insoluble in water. The UV-VIS response showed that only 15.5% of trimethylvinylsilane could be detected after 0.5h. The UV-VIS response furthermore showed a loss of 79.0% after 7.5 hours.
Mass spectrometry:
The product ion scan showed the [M+H]+ signal at 101 m/z and a fragment ion at 57 m/z.
Interpretation:
It was not possible to determine the water solubility of trimethylvinyl silane.The method yielded reliable chromatograms with UV detection at 200 nm. However, dispensing trimethylvinyl silane in water or medium with a concentration of 200 ppm failed due to the test item's low water solubility. The test item appeared as tiny, oily droplets (visual observation). Furthermore, the test item was not stable in water. A number of possible side reactions were considered:
- Separation of tiny droplets of the test item on the water surface.
- Adsorption of the test item onto the glass surface.
- Evaporation of the test item due to its high volatility.
- Hydrolysis of the test item in contact with water.
Applicant's summary and conclusion
- Conclusions:
- It was not possible to determine the water solubility of trimethylvinyl silane.
- Executive summary:
It was not possible to determine the water solubility of trimethylvinyl silane.The method yielded reliable chromatograms with UV detection at 200 nm. However, dispensing trimethylvinyl silane in water or medium with a concentration of 200 ppm failed due to the test item's low water solubility. The test item appeared as tiny, oily droplets (visual observation). Furthermore, the test item was not stable in water. A number of possible side reactions were considered:
- Separation of tiny droplets of the test item on the water surface.
- Adsorption of the test item onto the glass surface.
- Evaporation of the test item due to its high volatility.
- Hydrolysis of the test item in contact with water.
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