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Silanes and silicones

Triethoxymethylsilane

Also known as Methyltriethoxysilane, Triethoxy(methyl)silane, Methyl triethoxysilane

CAS 2031-67-6Formula C7H18O3SiMolar mass 178.30 g/molEC 217-983-9
GHS signal word: Warning. Pictograms: Flammable 39 suppliers listed
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Triethoxymethylsilane chemical structure, C7H18O3Si, CAS 2031-67-6
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Liquid
Boiling point
144.5 °C
Density
0.895 @ 20 °C
HS code
293190
Category
Silanes and silicones
Illustrative photo, closed amber glass reagent bottles on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Triethoxymethylsilane?

Plain description, key identifiers and synonyms

Triethoxymethylsilane is a chemical substance with the molecular formula C7H18O3Si and a molar mass of 178.30 g/mol. Its CAS registry number is 2031-67-6. The IUPAC name is triethoxy(methyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
triethoxy(methyl)silane
CAS number
2031-67-6 CAS number cross-checkedOther or deprecated CAS: 25930-91-0
EC number
217-983-9
Molecular formula
C7H18O3Si
UNII
N811L6SAVL
MDL number
MFCD00009066
INCI name
METHYLTRIETHOXYSILANE
InChIKey
CPUDPFPXCZDNGI-UHFFFAOYSA-N
InChI
InChI=1S/C7H18O3Si/c1-5-8-11(4,9-6-2)10-7-3/h5-7H2,1-4H3
SMILES (canonical and isomeric)
CCO[Si](C)(OCC)OCC

Synonyms

  • Methyltriethoxysilane
  • Triethoxy(methyl)silane
  • Methyl triethoxysilane
  • Silane, triethoxymethyl-
  • Triethoxysilylmethane
  • Union carbide A-162
  • ICI-EP 5850
  • Silane, methyltriethoxy-
  • MTES
  • Methaneorthosiliconic acid, triethyl ester
  • Dynasylan MTES
  • methyl triethoxy silane
  • methyl(triethoxy)silane
  • Triethoxymethylsilane, 99%
  • CH3Si(OC2H5)3
  • 4-04-00-04204 (Beilstein Handbook Reference)
  • Silane,methyl,triethoxy
  • Triethoxymethylsilane, technical grade, 90%

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.
Boiling point
144.5 °Cexp.
Density
0.895 @ 20 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
178.30 g/molcalc.
Exact mass
178.1025 Dacalc.
LogP (octanol/water)
1.66calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
6calc.
Heavy atoms
11calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS02: Flammable
Flammable

Hazard statements

  • H226Flammable liquid and vapour.
Precautionary statements (11)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Triethoxymethylsilane suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 39 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

39 suppliers in 7 countries

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Triethoxymethylsilane price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Intermediate, Adhesion/cohesion promoter.

Cosmetic ingredient, INCI name METHYLTRIETHOXYSILANE(not reported)

Functional uses

  • Adhesion/cohesion promoter
  • Chemical reaction regulator
  • Hardener
  • Humectant
  • Processing aids not otherwise specified
  • Viscosity modifier

Cosmetic functions

  • Not reported

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Triethoxymethylsilane is traded under.

HS 2931.90Indicative HS code

Organo-inorganic compounds, other than tetramethyl lead, tetraethyl lead, tributyltin compounds…

World exports in 2024
$3.97B
+5.3% vs 2023, imports $3.93B
2019 to 2024
Top exporters
  1. China28.3%
  2. United States15.6%
  3. Germany15.1%
Top importers
  1. United States14.6%
  2. China13.0%
  3. South Korea8.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Triethoxymethylsilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Triethoxymethylsilane, based on the data on this page

What is Triethoxymethylsilane?

Triethoxymethylsilane is a chemical substance with the molecular formula C7H18O3Si and a molar mass of 178.30 g/mol. Its CAS registry number is 2031-67-6. The IUPAC name is triethoxy(methyl)silane.

What is the CAS number of Triethoxymethylsilane?

The CAS registry number of Triethoxymethylsilane is 2031-67-6. Other or deprecated CAS numbers: 25930-91-0.

What is the molecular formula and weight of Triethoxymethylsilane?

The molecular formula of Triethoxymethylsilane is C7H18O3Si and its molar mass is 178.30 g/mol.

What is Triethoxymethylsilane used for?

Industrial uses: Intermediate, Adhesion/cohesion promoter.

Is Triethoxymethylsilane hazardous?

Triethoxymethylsilane carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Triethoxymethylsilane?

Triethoxymethylsilane is usually classified under HS code 293190 (X. ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Triethoxymethylsilane?

CompoundList lists 39 suppliers of Triethoxymethylsilane in China, United States, Germany, India and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Triethoxymethylsilane in India?

1 supplier in India list Triethoxymethylsilane on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Triethoxymethylsilane?

Suppliers quote Triethoxymethylsilane on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Triethoxymethylsilane

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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