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Silanes and silicones

Methyldimethoxysilane

Also known as Silane, dimethoxymethyl-, dimethoxy-methylsilane, dimethoxymethyl silane

CAS 16881-77-9Formula C3H10O2SiMolar mass 106.20 g/molEC 240-914-9
GHS signal word: Danger. Pictograms: Flammable, Acute toxicity (severe), Harmful or irritant 5 suppliers listed
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Methyldimethoxysilane chemical structure, C3H10O2Si, CAS 16881-77-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
16881-77-9
Formula
C3H10O2Si
Molar mass
106.20 g/mol
Physical form
Liquid
HS code
293190
Category
Silanes and silicones
Illustrative photo, a closed 1000 litre IBC tote in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Methyldimethoxysilane?

Plain description, key identifiers and synonyms

Methyldimethoxysilane is a chemical substance with the molecular formula C3H10O2Si and a molar mass of 106.20 g/mol. Its CAS registry number is 16881-77-9. The IUPAC name is dimethoxy(methyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dimethoxy(methyl)silane
CAS number
16881-77-9 CAS number cross-checked
EC number
240-914-9
Molecular formula
C3H10O2Si
InChIKey
WOUUFVMQNDKHSY-UHFFFAOYSA-N
InChI
InChI=1S/C3H10O2Si/c1-4-6(3)5-2/h6H,1-3H3
SMILES (canonical and isomeric)
CO[SiH](C)OC

Synonyms

  • Silane, dimethoxymethyl-
  • dimethoxy-methylsilane
  • dimethoxymethyl silane
  • Wouufvmqndkhsy-uhfffaoysa-

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.

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
106.20 g/molcalc.
Exact mass
106.045 Dacalc.
LogP (octanol/water)
0.13calc.
Topological polar surface area
18.46 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
6calc.
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
Danger
GHS02: Flammable
Flammable
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H302Harmful if swallowed.
  • H311Toxic in contact with skin.
Precautionary statements (21)
  • 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.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • 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

Methyldimethoxysilane suppliers

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

All 5 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

5 suppliers in 2 countries

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Methyldimethoxysilane 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.

Functional uses

  • Adhesion/cohesion promoter
  • Hardener

Regulatory status

Inventories, regulations and trade controls that list this substance

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 Methyldimethoxysilane 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 Methyldimethoxysilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Methyldimethoxysilane?

Methyldimethoxysilane is a chemical substance with the molecular formula C3H10O2Si and a molar mass of 106.20 g/mol. Its CAS registry number is 16881-77-9. The IUPAC name is dimethoxy(methyl)silane.

What is the CAS number of Methyldimethoxysilane?

The CAS registry number of Methyldimethoxysilane is 16881-77-9.

What is the molecular formula and weight of Methyldimethoxysilane?

The molecular formula of Methyldimethoxysilane is C3H10O2Si and its molar mass is 106.20 g/mol.

What is Methyldimethoxysilane used for?

Industrial uses: Intermediate.

Is Methyldimethoxysilane hazardous?

Methyldimethoxysilane carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, harmful if swallowed, toxic in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Methyldimethoxysilane?

Methyldimethoxysilane 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 Methyldimethoxysilane?

CompoundList lists 5 suppliers of Methyldimethoxysilane in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Methyldimethoxysilane?

Suppliers quote Methyldimethoxysilane 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 Methyldimethoxysilane

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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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