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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 213-050-5 | CAS number: 919-31-3
- 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
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_physical-and-chemical-properties.png)
Endpoint summary
Administrative data
Description of key information
3-(Triethoxysilyl)propiononitrile is a liquid at standard temperature and pressure, with a melting point of -140.2°C at 1013 hPa and a boiling point of 224°C. It has a relative density of 0.97 at 20°C and a calculated vapour pressure of 1.9 Pa at 20°C.
The substance is not classified for flammability according to Regulation (EC) No. 1272/2008 on the basis of a measured flash point of 70.5°C at 1013 hPa and a boiling point of 224°C at 1013 hPa. The substance has a measured auto-ignition temperature of 254°C at 1013 hPa and it is not explosive and not oxidising on the basis of chemical structure.
In contact with water, the substance hydrolyses rapidly (half-lives of <0.5 h at pH 4 and pH 9, 6.5 h at pH 7 and 20°C) resulting in the formation of 3-(trihydroxysilyl)propiononitrile (CAS 182156-21-4) and ethanol according to the following equation:
N=CCH2CH2Si(OCH2CH3)3+ 3H2O ¿ N=CCH2CH2Si(OH)3 + 3CH3CH2OH
Therefore, requirements for testing of water-based physicochemical properties for the substance are waived on the basis of instability in water.
However, the properties of the parent submission substance have been estimated using appropriate QSAR methods. The substance has a predicted log Kow value of 1.7 and a predicted water solubility value of 4E+03 mg/L at 20°C.
Ethanol is miscible with water, has low log Kow (-0.3) and high vapour pressure (7910 Pa at 25°C).
The saturation concentration in water of the silanol hydrolysis product, 3-(trihydroxysilyl)propiononitrile, is limited by condensation reactions to approximately 1000 mg/L. However, it is very hydrophilic (calculated solubility is 1.0E+06 mg/L using a QSAR method) and has a predicted log Kow of -2.9. 3-(Trihydroxysilyl)propiononitrile is not surface active and is much less volatile than the parent substance with a predicted vapour pressure of 6.7E-05 Pa at 25°C.
Additional information
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.
![ECHA](/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/echa_logo.png)