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EC number: 402-810-3 | CAS number: 17980-47-1 DYNASILAN BH N; DYNASILAN BSM 100 N; DYNASILAN NH 42
- 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
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Vapour pressure (triethoxyisobutylsilane): 33 Pa at 20°C, 49 Pa at 25°C (dynamic method)
Vapour pressure (isobutylsilanetriol): 0.0029 Pa at 25°C (QSAR)
Key value for chemical safety assessment
- Vapour pressure:
- 33 Pa
- at the temperature of:
- 20 °C
Additional information
A measured vapour pressure values of 33 Pa and 49 Pa at 20°C and 25°C respectively were determined for the substance using an appropriate test method. The result is considered reliable and selected as key study. This value is supported by a predicted vapour pressure of 38 Pa at 25°C using a validated QSAR method. A secondary source to which no reliability could be assigned reported vapour pressure values of 120 Pa (20°C) and 173 Pa (25°C) for the substance, information on test method and purity of the sample was not stated. In a disregarded study, a vapour pressure value of 610 Pa at 25°C was determined for the substance. This study was disregarded due to very few temperature determinations over a very narrow range meaning that there was high uncertainty on the extrapolation. There are suspected typographical errors in the recorded raw data and due to inadequacies in the reporting, it is impossible to replicate the regression. Furthermore, it is noted that information on purity of the tested sample is lacking; this unexpectedly high result may possibly reflect impurities present, since the method used (static method) is susceptible to overestimate vapour pressure if volatile impurities are present in the sample. Differences in vapour pressure values could be as a result of varying purities for individual commercial samples tested, and method used.
The vapour pressure of the hydrolysis product was determined to be 0.0029 Pa at 25°C using an appropriate QSAR estimation method.
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