CompoundList
Sign in
Silanes and silicones

Triethoxychlorosilane

Also known as Chlorotriethoxysilane, Chloro(triethoxy)silane, Silane, chlorotriethoxy-

CAS 4667-99-6Formula C6H15ClO3SiMolar mass 198.72 g/molEC 225-112-9
GHS signal word: Danger. Pictograms: Flammable, Corrosive
Get quotes Safety data
Triethoxychlorosilane chemical structure, C6H15ClO3Si, CAS 4667-99-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4667-99-6
Formula
C6H15ClO3Si
Molar mass
198.72 g/mol
Physical form
Liquid
HS code
292090
Category
Silanes and silicones
Illustrative photo, closed blue jerry cans in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Triethoxychlorosilane?

Plain description, key identifiers and synonyms

Triethoxychlorosilane is a chemical substance with the molecular formula C6H15ClO3Si and a molar mass of 198.72 g/mol. Its CAS registry number is 4667-99-6. The IUPAC name is chloro(triethoxy)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
chloro(triethoxy)silane
CAS number
4667-99-6 CAS number cross-checked
EC number
225-112-9
Molecular formula
C6H15ClO3Si
MDL number
MFCD00015124
InChIKey
JEZFASCUIZYYEV-UHFFFAOYSA-N
InChI
InChI=1S/C6H15ClO3Si/c1-4-8-11(7,9-5-2)10-6-3/h4-6H2,1-3H3
SMILES (canonical and isomeric)
CCO[Si](OCC)(OCC)Cl

Synonyms

  • Chlorotriethoxysilane
  • Chloro(triethoxy)silane
  • Silane, chlorotriethoxy-
  • triethoxysilyl chloride
  • ClSi(OEt)3
  • triethoxy-chloro-silane
  • Chlorotri(ethoxy)silane
  • Chloro(triethoxy)silane #
  • Chlorotriethoxysilane, 98%
  • Silane,chlorotriethoxy, EINECS 225-112-9, Triethoxychlorosilane, chlorotriethoxysilane, triethoxysilyl chloride,

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
198.72 g/molcalc.
Exact mass
198.0479 Dacalc.
LogP (octanol/water)
1.77calc.
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
Danger
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive

Hazard statements

  • H226Flammable liquid and vapour.
  • H314Causes severe skin burns and eye damage.
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.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing 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

Triethoxychlorosilane suppliers

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

No supplier listings yet

Post one free request and suppliers who make or trade Triethoxychlorosilane can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Triethoxychlorosilane price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

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 Triethoxychlorosilane is traded under.

HS 2920.90Indicative HS code

Esters, other than thiophosphoric esters (phosphorothioates) and phosphite esters and their salts…

World exports in 2024
$1.05B
+8.0% vs 2023, imports $1.23B
2019 to 2024
Top exporters
  1. China33.4%
  2. Germany18.8%
  3. United States12.4%
Top importers
  1. United States19.2%
  2. Singapore8.9%
  3. South Korea6.9%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Triethoxychlorosilane?

Triethoxychlorosilane is a chemical substance with the molecular formula C6H15ClO3Si and a molar mass of 198.72 g/mol. Its CAS registry number is 4667-99-6. The IUPAC name is chloro(triethoxy)silane.

What is the CAS number of Triethoxychlorosilane?

The CAS registry number of Triethoxychlorosilane is 4667-99-6.

What is the molecular formula and weight of Triethoxychlorosilane?

The molecular formula of Triethoxychlorosilane is C6H15ClO3Si and its molar mass is 198.72 g/mol.

Is Triethoxychlorosilane hazardous?

Triethoxychlorosilane carries the GHS signal word "Danger". Main hazards: flammable liquid and vapour, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Triethoxychlorosilane?

Triethoxychlorosilane is usually classified under HS code 292090 (Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Triethoxychlorosilane?

Post a free request on CompoundList and suppliers of Triethoxychlorosilane will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Triethoxychlorosilane?

Suppliers quote Triethoxychlorosilane 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 Triethoxychlorosilane

Get quotes for Triethoxychlorosilane

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Triethoxychlorosilane
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Triethoxychlorosilane with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/triethoxychlorosilane-4667-99-6" title="Triethoxychlorosilane structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Silanes and silicones or HS code 292090

Price on request
Free quotes, contact stays private
Get quotes