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Silanes and silicones

Dichloroethylsilane

Also known as Ethyl dichlorosilane, Ethyldichlorosilane, Monoethyldichlorosilane

CAS 1789-58-8Formula C2H6Cl2SiMolar mass 129.06 g/molEC 217-255-0
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Harmful or irritant, Serious health hazard
Get quotes Safety data
Dichloroethylsilane chemical structure, C2H6Cl2Si, CAS 1789-58-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless liquid
Boiling point
75.5 °C
Density
1.088 (25 °C/25 °C)
Flash point
-1 °C
HS code
293190
Category
Silanes and silicones
UN number
UN 1183
Illustrative photo, a 1000 litre IBC tote of clear liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Dichloroethylsilane?

Plain description, key identifiers and synonyms

Ethyldichlorosilane appears as a colorless fuming liquid with a pungent odor. Flash point 30 °F. Vapor and liquid may cause burns. Denser than water. Vapors heavier than air.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dichloro(ethyl)silane
CAS number
1789-58-8 CAS number cross-checked
EC number
217-255-0
Molecular formula
C2H6Cl2Si
InChIKey
RKHXNBJRDQOIOQ-UHFFFAOYSA-N
InChI
InChI=1S/C2H6Cl2Si/c1-2-5(3)4/h5H,2H2,1H3
SMILES (canonical and isomeric)
CC[SiH](Cl)Cl

Synonyms

  • Ethyl dichlorosilane
  • Ethyldichlorosilane
  • Monoethyldichlorosilane
  • Silane, dichloroethyl-
  • dichloro(ethyl)silane
  • Dichloro-ethylsilane
  • dichloro-ethyl-silane
  • Rkhxnbjrdqoioq-uhfffaoysa-
  • Dichloroethylsilane, >=98.0% (AT)

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

Appearance
Colorless liquidexp.
Boiling point
75.5 °Cexp.
Density
1.088 (25 °C/25 °C)exp.
Flash point
-1 °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
129.06 g/molcalc.
Exact mass
127.9616 Dacalc.
LogP (octanol/water)
1.7calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
5calc.
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
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
332NFPA 704 rating

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H260In contact with water releases flammable gases which may ignite spontaneously.
  • H314Causes severe skin burns and eye damage.
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled.
  • H335May cause respiratory irritation.
Precautionary statements (32)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P223Do not allow contact with water.
  • P231 + P232Handle and store contents under inert gas. Protect from moisture.
  • 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.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P335 + P334If on skin: Brush off loose particles from skin. Immerse in cool water or wrap in wet bandages.
  • 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.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P342 + P316If experiencing respiratory symptoms: Get emergency medical help immediately.
  • P363Wash contaminated clothing before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P402 + P404Store in a dry place. Store in a closed container.
  • P403Store in a well-ventilated place.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1183
Transport hazard class
4.3
Packing group
I

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

Dichloroethylsilane suppliers

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Dichloroethylsilane 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

Intermediate for silicones.

How it is made

Grignard reaction of trichlorosilane and ethylmagnesium chloride

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

Frequently asked questions

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

What is Dichloroethylsilane?

Ethyldichlorosilane appears as a colorless fuming liquid with a pungent odor. Flash point 30 °F. Vapor and liquid may cause burns. Denser than water. Vapors heavier than air.

What is the CAS number of Dichloroethylsilane?

The CAS registry number of Dichloroethylsilane is 1789-58-8.

What is the molecular formula and weight of Dichloroethylsilane?

The molecular formula of Dichloroethylsilane is C2H6Cl2Si and its molar mass is 129.06 g/mol.

What is Dichloroethylsilane used for?

Intermediate for silicones.

Is Dichloroethylsilane hazardous?

Dichloroethylsilane carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, in contact with water releases flammable gases which may ignite spontaneously, 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 Dichloroethylsilane?

Dichloroethylsilane 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 Dichloroethylsilane?

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What is the price of Dichloroethylsilane?

Suppliers quote Dichloroethylsilane 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 Dichloroethylsilane

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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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