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EC number: 220-011-6 | CAS number: 2602-34-8
- 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
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Endpoint summary
Administrative data
Description of key information
[3-(2,3-Epoxypropoxy)propyl]triethoxysilane is a liquid at standard temperature and pressure, with a measured melting point of <-70°C at 1013 hPa and a predicted boiling point of 270°C at 1013 hPa. It has a predicted density of 0.97 g/cm3 at 20°C, a predicted vapour pressure of 0.07 Pa at 25°C and a predicted kinematic viscosity of 2.3 mm2/s at 20°C.
The substance is soluble in water based on predicted water solubility of 3300 mg/L at 20°C and a predicted log Kow of 2.0.
The substance is not classified for flammability according to Regulation EC (No) 1272/2008 on the basis of a measured flash point of 119°C at 1013 hPa and a predicted boiling point of 270°C at 1013 hPa. It has a measured auto-ignition temperature of 230°C at 1002.1-1019.8 hPa and is not oxidising on the basis of chemical structure. The substance is found not to be explosive based on read-across from related structural analogue, [3-(2,3-epoxypropoxy)propyl]trimethoxysilane using EU Method A.14 test method; the presence of an epoxy group in an organosilicon compound is not associated with explosive properties.
In contact with water, [3-(2,3-epoxypropoxy)propyl]triethoxysilane reacts moderately rapidly (half-life of 12–36 hours at pH 7 and 25°C) to ultimately produce 2,3-dihydroxypropoxypropylsilanetriol and ethanol according to the following equation:
(C2H3O)CH2OCH2CH2CH2Si(OCH2CH3)3 + 4H2O → (CH2OH-CHOHCH2O)CH2OCH2CH2CH2Si(OH)3 + 3CH3CH2OH
Ethanol is miscible with water, has low log Kow of -0.3 and high vapour pressure of 7910 Pa at 25°C.
The saturation concentration in water of the silanol hydrolysis product, 2,3-dihydroxypropoxypropylsilanetriol is limited by condensation reactions that can occur over time at loadings about 1000 mg/L. However, it is very hydrophilic (calculated solubility is 1.0E+6 mg/L at 20°C using a QSAR method) and has a low log Kow of -3.8 (predicted).
The silanol hydrolysis product is not expected to undergo significant dissociation within the environmentally-relevant range. The first dissociation constant of a structurally analogous silanetriol (phenylsilanetriol) has been reported to be around pKa of 10. 2,3-Dihydroxypropoxypropylsilanetriol is much less volatile than the parent substance with a predicted vapour pressure of 1.7E-07 Pa at 25°C and it is not surface active.
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.
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