Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 237-041-0 | CAS number: 13596-23-1
- 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 [Octachlorotrisilane]: 9.4 Pa at 25°C (QSAR)
Vapour pressure [Octahydroxytrisilane]: <1E-06 Pa at 25 °C (QSAR)
Vapour pressure [Monosilicic Acid]: <1E-06 Pa at 25 °C (QSAR)
Key value for chemical safety assessment
- Vapour pressure:
- 9.4 Pa
- at the temperature of:
- 25 °C
Additional information
A measured vapour pressure of 2 hPa at 20°C was determined for the substance using the static method. However, the method used is susceptible to the presence of volatile impurities in the sample which are not properly degassed prior to the measurement. The study report lacks detailed information on the purity, physical state or batch number of the substance and the sample handling during the study. The study report also indicates that decomposition was observed during the vapour pressure study from about 100°C. The measured value of 2 hPa is therefore considered high for the substance and is disregarded. A predicted vapour pressure of 9.4 Pa at 25°C was determined for the test substance using an estimation method; the result is considered to be reliable and selected as key study. The QSAR value has been validated using reliable measurements for structural analogues reflecting the main constituent.
The vapour pressure has been obtained for the hydrolysis products using an appropriate calculation method:
Vapour pressure [Octahydroxytrisilane]: <1E-06 Pa at 25°C (Test method/QSAR) - Hydrolysis Product
Vapour pressure [Monosilicic Acid]: <1E-06 Pa at 25°C (Test method/QSAR) - Hydrolysis Product
The method has not been validated for inorganic substances but gives an indication of very low vapour pressure. Neither product has been isolated and the predicted values are included for completeness only.
The substance and hydrolysis products have very low vapour pressures so are not considered volatile.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.