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Silanes and silicones

Diallyldichlorosilane

Also known as Silane, dichlorodi-2-propenyl-, Silane, dichlorodi-2-propen-1-yl-, dichloro-bis(prop-2-enyl)silane

CAS 3651-23-8Formula C6H10Cl2SiMolar mass 181.14 g/molEC 887-358-9
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Harmful or irritant
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Diallyldichlorosilane chemical structure, C6H10Cl2Si, CAS 3651-23-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3651-23-8
Formula
C6H10Cl2Si
Molar mass
181.14 g/mol
Physical form
Liquid
HS code
293190
Category
Silanes and silicones
Illustrative photo, closed amber glass reagent bottles on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Diallyldichlorosilane?

Plain description, key identifiers and synonyms

Diallyldichlorosilane is a chemical substance with the molecular formula C6H10Cl2Si and a molar mass of 181.14 g/mol. Its CAS registry number is 3651-23-8. The IUPAC name is dichloro-bis(prop-2-enyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dichloro-bis(prop-2-enyl)silane
CAS number
3651-23-8 CAS number cross-checked
EC number
887-358-9
Molecular formula
C6H10Cl2Si
MDL number
MFCD00048160
InChIKey
VTEHVUWHCBXMPI-UHFFFAOYSA-N
InChI
InChI=1S/C6H10Cl2Si/c1-3-5-9(7,8)6-4-2/h3-4H,1-2,5-6H2
SMILES (canonical and isomeric)
C=CC[Si](CC=C)(Cl)Cl

Synonyms

  • Silane, dichlorodi-2-propenyl-
  • Silane, dichlorodi-2-propen-1-yl-
  • dichloro-bis(prop-2-enyl)silane
  • Dichlorodi-2-propen-1-ylsilane
  • C6H10Cl2Si
  • dichlorobis(prop-2-en-1-yl)silane
  • diallyl(dichloro)silane
  • silane, diallyldichloro-
  • Dichlorodi(prop-2-en-1-yl)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
181.14 g/molcalc.
Exact mass
179.9929 Dacalc.
LogP (octanol/water)
3.28calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
4calc.
Heavy atoms
9calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.33calc.
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

Hazard statements

  • H226Flammable liquid and vapour.
  • H302 + H312 + H332Harmful if swallowed. Harmful in contact with skin. Harmful if inhaled.
  • H314Causes severe skin burns and eye damage.
Precautionary statements (29)
  • 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.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • 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.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

Diallyldichlorosilane suppliers

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

Frequently asked questions

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

What is Diallyldichlorosilane?

Diallyldichlorosilane is a chemical substance with the molecular formula C6H10Cl2Si and a molar mass of 181.14 g/mol. Its CAS registry number is 3651-23-8. The IUPAC name is dichloro-bis(prop-2-enyl)silane.

What is the CAS number of Diallyldichlorosilane?

The CAS registry number of Diallyldichlorosilane is 3651-23-8.

What is the molecular formula and weight of Diallyldichlorosilane?

The molecular formula of Diallyldichlorosilane is C6H10Cl2Si and its molar mass is 181.14 g/mol.

Is Diallyldichlorosilane hazardous?

Diallyldichlorosilane carries the GHS signal word "Danger". Main hazards: flammable liquid and vapour, harmful if swallowed. harmful in contact with skin. harmful if inhaled, 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 Diallyldichlorosilane?

Diallyldichlorosilane 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 Diallyldichlorosilane?

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What is the price of Diallyldichlorosilane?

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Guides for buyers

Practical guides that help when you source, ship or handle Diallyldichlorosilane

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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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