Triethoxymethylsilane
Basic information
- CAS
2031-67-6- Standard SMILES
CCO[Si](C)(OCC)OCC- InChIKey
CPUDPFPXCZDNGI-UHFFFAOYSA-N- Molecular formula
- C7H18O3Si
- Average molar mass
- 178.3 g/mol
- Monoisotopic mass
- 178.10252097
Overview
See also: Silane, triethoxymethyl-, homopolymer (annotation moved to).
Names & identifiers
- Preferred name
- Triethoxymethylsilane
- IUPAC
- triethoxy(methyl)silane
- English name
- Methyltriethoxysilane
- Molecular formula
- C7H18O3Si
- Molecular weight
- 178.3
Names & synonyms
MethyltriethoxysilaneTriethoxymethylsilane2031-67-6Triethoxy(methyl)silaneMethyl triethoxysilaneSilane, triethoxymethyl-TriethoxysilylmethaneUnion carbide A-162ICI-EP 5850SILANE, METHYLTRIETHOXY-MTESA 162
Show more names
a162ND-27DK203HD-120CM9050KH- 132Silquest A
Methaneorthosiliconic acid, triethyl esterNSC 5226DTXSID6042490MFCD00009066N811L6SAVLNSC5226NSC-5226Dynasylan MTES
Database identifiers
- CAS
2031-67-6- PubChem CID
- 16241
- DTXSID
DTXSID6042490- ChEMBL
CHEMBL3184635- UNII
- N811L6SAVL
- EC Number
- 217-983-9
- Nikkaji
- J48.155F
Properties
Computed structural properties
- Topological polar surface area
- 27.7 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 6
- Heavy atoms
- 11
- Formal charge
- 0
- Complexity
- 80.7
Experimental & physicochemical properties
Chemical ClassesMetals -> Metalloid Compounds (Silicon)
SpringerMaterials PropertiesBoiling point
Density0.895 @ 20°C
Boiling Point144.5 °C @760 [mm Hg]
Vapor Pressure11.0 [mmHg]
Physical Description
Liquid
Clear colorless liquid; [Acros Organics MSDS]
Physicochemical properties
- Melting point
- -40 °C · <-40°C
- Boiling point
- 141 · 141-143 °C(lit.)
- Density
- 0.895 g/mL · 0.895 g/mL at 25 °C(lit.)
- vapor density
- 1 · >1 (vs air)
- vapor pressure
- 11 mm · 11 mm Hg ( 20 °C)
- refractive index
- 20 · n20/D 1.383(lit.)
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 0.6% (5 of 799) of reports.
Warning
H226 (99.4%): Flammable liquid and vapor [Warning Flammable liquids]
P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 799 reports by companies from 6 notifications to the ECHA C&L Inventory.
Hazard information
Regulatory Information
Chemical: Silane, triethoxymethyl-
Silane, triethoxymethyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silane, triethoxymethyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
REACH registered substance: Triethoxy(methyl)silane (EC: 217-983-9)
Triethoxymethylsilane: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationEvaluation - Chemicals that are unlikely to require further regulation to manage risks to environment
Hazards Summary
A mild skin and eye irritant; Causes somnolence, ataxia, and other respiratory changes in dermal lethal-dose studies of rabbits; Causes tremor and dyspnea in inhalation lethal-concentration studies of rats; Causes somnolence and gastrointestinal changes in oral lethal-dose studies of rats; [RTECS] A skin and eye irritant; May cause CNS effects; [Acros Organics MSDS] See Trimethoxypropylsilane.
Hazard Classes and CategoriesFlam. Liq. 3 (99.4%)
Safety & protection
Chemistry & industry
Uses & manufacturing
UsesPermitted for use as an inert ingredient in non-food pesticide products; [EPA]
U.S. Production2023: 1,000,000 - <2,500,000 lb
Industry UsesIntermediate
General Manufacturing Information
Paint and Coating Manufacturing
Silane, triethoxymethyl-: ACTIVE
Applications
DescriptionMethyltriethoxysilane is an alkylalkoxysilane. It is a clear, colorless liquid with an odor characteristic of alcohols. It hydrolyzes slowly in the presence of moisture to form reactive silanols. These react further to produce oligosiloxanes and then polysiloxanes. As a Filler Modifier, Methyltrimethoxysilane is used mainly to render a wide range of surfaces and materials water repellent (e.g. mineral fillers, pigments, glass, cardboard). It may be used pure or in solution to treat fillers, using suitable mixing equipment. It may be necessary to first pre-treat the substrate with water and/or a catalyst. It is also used in the production of silicone resins and condensation-curing silicone rubber, used as an important component in sol-gel systems. As one of the most common Alkoxy Crosslinkers, Methyltrimethoxysilane has high reactivity that precedes by nucleophilic substitution usually in the presence of acid or base catalysts.
UsesMethyltriethoxysilane is used in production of silicone polymers or silicone resin. It is used in non-metal surface treatment, non-aqueous polymer preparation, manufacture of semi-conductors, coatings and sealants. It finds application as cross linking agent and an adhesion promoter.
Upstream & downstream products
Upstream raw materials
Related reactions
31 records
Compound notes
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