Triethoxymethylsilane

HCID 16241CAS 2031-67-6
Substructure searchFind similar structures

Basic information

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

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 · 2 items

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

GHS classification

GHS Classification · 5 items

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 · 4 items

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)

Status: Active Update: 23-03-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/13139

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 · 1 item

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

Protective Action Criteria (PAC) · 3 items

3.3 [ppm]

36 [ppm]

220 [ppm]

Toxicology

Toxicity DataLCLo (rat) = 4,000 ppm/8hr

Safety data

F
10-21
PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
wgk
3
tsca
TSCA listed
rtecs
VV4640000
ridadr
UN 1993 3/PG 3

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 · 2 items

Paint and Coating Manufacturing

Silane, triethoxymethyl-: ACTIVE

Applications · 2 items

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

Suppliers50 total

国药集团化学试剂有限公司86-21-63210123 · [email protected]
梯希爱(上海)化成工业发展有限公司021-67121386 · [email protected]
上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]
杭州大地化工有限公司0571-82699306 13906719152 · [email protected]
南京兰亚化工贸易有限公司+86-25-8331-5620 · [email protected]

Related reactions

31 records
New reaction record

Linked notes

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