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Silanes and silicones

Diethoxydichlorosilane

Also known as Dichloro(diethoxy)silane, Dichlorodiethoxysilane, Silane, dichlorodiethoxy-

CAS 4667-38-3Formula C4H10Cl2O2SiMolar mass 189.11 g/molEC 696-059-0
GHS signal word: Danger. Pictograms: Corrosive 1 supplier listed
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Diethoxydichlorosilane chemical structure, C4H10Cl2O2Si, CAS 4667-38-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4667-38-3
Formula
C4H10Cl2O2Si
Molar mass
189.11 g/mol
EC number
696-059-0
HS code
292090
Category
Silanes and silicones

What is Diethoxydichlorosilane?

Plain description, key identifiers and synonyms

Diethoxydichlorosilane is a chemical substance with the molecular formula C4H10Cl2O2Si and a molar mass of 189.11 g/mol. Its CAS registry number is 4667-38-3. The IUPAC name is dichloro(diethoxy)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dichloro(diethoxy)silane
CAS number
4667-38-3 CAS number cross-checked
EC number
696-059-0
Molecular formula
C4H10Cl2O2Si
MDL number
MFCD00192005
InChIKey
UFCXHBIETZKGHB-UHFFFAOYSA-N
InChI
InChI=1S/C4H10Cl2O2Si/c1-3-7-9(5,6)8-4-2/h3-4H2,1-2H3
SMILES (canonical and isomeric)
CCO[Si](OCC)(Cl)Cl

Synonyms

  • Dichloro(diethoxy)silane
  • Dichlorodiethoxysilane
  • Silane, dichlorodiethoxy-
  • Dichloro-diethoxy-silane
  • Dichlorodi(ethoxy)silane
  • SiCl2(OEt)2
  • C4H10Cl2O2Si
  • Diethoxydichlorosilane, tech-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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
189.11 g/molcalc.
Exact mass
187.9827 Dacalc.
LogP (octanol/water)
1.97calc.
Topological polar surface area
18.46 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
4calc.
Heavy atoms
9calc.
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
GHS05: Corrosive
Corrosive

Hazard statements

  • H314Causes severe skin burns and eye damage.
Precautionary statements (12)
  • 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.
  • 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.
  • 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

Diethoxydichlorosilane suppliers

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Where suppliers are based

1 supplier in 1 country

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Diethoxydichlorosilane 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

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

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Diethoxydichlorosilane 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 Diethoxydichlorosilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Diethoxydichlorosilane?

Diethoxydichlorosilane is a chemical substance with the molecular formula C4H10Cl2O2Si and a molar mass of 189.11 g/mol. Its CAS registry number is 4667-38-3. The IUPAC name is dichloro(diethoxy)silane.

What is the CAS number of Diethoxydichlorosilane?

The CAS registry number of Diethoxydichlorosilane is 4667-38-3.

What is the molecular formula and weight of Diethoxydichlorosilane?

The molecular formula of Diethoxydichlorosilane is C4H10Cl2O2Si and its molar mass is 189.11 g/mol.

Is Diethoxydichlorosilane hazardous?

Diethoxydichlorosilane carries the GHS signal word "Danger". Main hazards: 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 Diethoxydichlorosilane?

Diethoxydichlorosilane 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 Diethoxydichlorosilane?

CompoundList lists 1 supplier of Diethoxydichlorosilane in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Diethoxydichlorosilane?

Suppliers quote Diethoxydichlorosilane 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 Diethoxydichlorosilane

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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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