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Silanes and silicones

Ethoxydimethylsilane

Also known as Silane, ethoxydimethyl-, ethoxy(dimethyl)silane

CAS 14857-34-2Formula C4H12OSiMolar mass 104.23 g/molEC 238-921-7
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant
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Ethoxydimethylsilane chemical structure, C4H12OSi, CAS 14857-34-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
14857-34-2
Formula
C4H12OSi
Molar mass
104.23 g/mol
Physical form
Liquid
HS code
293190
Category
Silanes and silicones
Illustrative photo, 25 litre white jerry cans of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Ethoxydimethylsilane?

Plain description, key identifiers and synonyms

Ethoxydimethylsilane is a chemical substance with the molecular formula C4H12OSi and a molar mass of 104.23 g/mol. Its CAS registry number is 14857-34-2. The IUPAC name is ethoxy(dimethyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
ethoxy(dimethyl)silane
CAS number
14857-34-2 CAS number cross-checked
EC number
238-921-7
Molecular formula
C4H12OSi
InChIKey
XZFFGKZBTQABBO-UHFFFAOYSA-N
InChI
InChI=1S/C4H12OSi/c1-4-5-6(2)3/h6H,4H2,1-3H3
SMILES (canonical and isomeric)
CCO[SiH](C)C

Synonyms

  • Silane, ethoxydimethyl-
  • ethoxy(dimethyl)silane

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
104.23 g/molcalc.
Exact mass
104.0657 Dacalc.
LogP (octanol/water)
1.01calc.
Topological polar surface area
9.23 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
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
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H315Causes skin irritation.
Precautionary statements (16)
  • 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.
  • P264Wash skin thoroughly after handling.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • 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.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off 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.
  • 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

Ethoxydimethylsilane suppliers

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Ethoxydimethylsilane price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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

Frequently asked questions

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

What is Ethoxydimethylsilane?

Ethoxydimethylsilane is a chemical substance with the molecular formula C4H12OSi and a molar mass of 104.23 g/mol. Its CAS registry number is 14857-34-2. The IUPAC name is ethoxy(dimethyl)silane.

What is the CAS number of Ethoxydimethylsilane?

The CAS registry number of Ethoxydimethylsilane is 14857-34-2.

What is the molecular formula and weight of Ethoxydimethylsilane?

The molecular formula of Ethoxydimethylsilane is C4H12OSi and its molar mass is 104.23 g/mol.

Is Ethoxydimethylsilane hazardous?

Ethoxydimethylsilane carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Ethoxydimethylsilane?

Ethoxydimethylsilane 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 Ethoxydimethylsilane?

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What is the price of Ethoxydimethylsilane?

Suppliers quote Ethoxydimethylsilane 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 Ethoxydimethylsilane

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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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