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Silanes and silicones

Vinyltrichlorosilane

Also known as Trichlorovinylsilane, Vtcs, Silane, trichloroethenyl-

CAS 75-94-5Formula C2H3Cl3SiMolar mass 161.49 g/molEC 200-917-8
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Acute toxicity (severe), Harmful or irritant 8 suppliers listed
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Vinyltrichlorosilane chemical structure, C2H3Cl3Si, CAS 75-94-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Fuming liquid
Melting point
-95 °C
Boiling point
91.5 °C
Density
1.2426 g/cm³ at 20 °C
Flash point
21 °C
HS code
293190
Category
Silanes and silicones
UN number
UN 1305
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Vinyltrichlorosilane?

Plain description, key identifiers and synonyms

Vinyltrichlorosilane appears as a colorless to pale yellow fuming liquid with a pungent odor. Vapor and liquid may cause burns. More dense than water. Vapors are heavier than air.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
trichloro(ethenyl)silane
CAS number
75-94-5 CAS number cross-checked
EC number
200-917-8
Molecular formula
C2H3Cl3Si
UNII
Q423F9NPBA
MDL number
MFCD00000482
InChIKey
GQIUQDDJKHLHTB-UHFFFAOYSA-N
InChI
InChI=1S/C2H3Cl3Si/c1-2-6(3,4)5/h2H,1H2
SMILES (canonical and isomeric)
C=C[Si](Cl)(Cl)Cl

Synonyms

  • Trichlorovinylsilane
  • Vtcs
  • Silane, trichloroethenyl-
  • Trichlorovinylsilicon
  • Silane, trichlorovinyl-
  • Vinyl trichlorosilane
  • Trichlorovinyl silicane
  • Vinylsilicon trichloride
  • Silane, vinyltrichloro-
  • Union carbide A-150
  • A 150 (silane)
  • Dynasylan VTC
  • vinylsilyl trichloride
  • Trichloro(vinyl)silane
  • trichloro(ethenyl)silane
  • trichloroethenylsilane
  • Silane, vinyl trichloro A-150
  • A 150 (VAN)
  • Vinyltrichlorosilane, inhibited
  • 4-04-00-04258 (Beilstein Handbook Reference)
  • (Trichlorosilyl)ethylene
  • C2H3Cl3Si
  • CH2=CHSiCl3
  • Trichlorovinylsilane, 97%
  • Silane, vinyltrichloro A-150
Show all 28 synonyms
  • Silane, trichlorovinyl- (8CI)
  • Vinyltrichlorosilane, inhibited [UN1305] [Flammable liquid]
  • UN 1305

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
Fuming liquidexp.
Odour
Sharp, choking, like hydrochloric acidexp.
Melting point
-95 °Cexp.
Boiling point
91.5 °Cexp.
Density
1.2426 g/cm³ at 20 °Cexp.
Flash point
21 °Cexp.
Autoignition temperature
263 °Cexp.
Solubility
Soluble in most organic solventsexp.
Vapour pressure
65.9 mm Hg at 25 °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
161.49 g/molcalc.
Exact mass
159.907 Dacalc.
LogP (octanol/water)
2.37calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
6calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
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
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant
332NFPA 704 rating

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H302Harmful if swallowed.
  • H311 + H331Toxic in contact with skin. Toxic if inhaled.
  • H311Toxic in contact with skin.
  • H312Harmful in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H331Toxic if inhaled.
Precautionary statements (32)
  • 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.
  • P262Do not get in eyes, on skin, or on clothing.
  • 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.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • 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 + 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 1305
Transport hazard class
3
Packing group
II

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

Vinyltrichlorosilane suppliers

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

All 8 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

8 suppliers in 3 countries

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Vinyltrichlorosilane 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

Monomer for copolymers in water repellents, electrical insulating resins, and high temp resins for paints.

Intermediate for silicones, coupling agent in adhesives and bonds.

Industrial uses: Intermediate.

Functional uses

  • Adhesion/cohesion promoter
  • Hardener
  • Processing aids not otherwise specified
  • Wetting agent (non-aqueous)

How it is made

Reaction of acetylene and trichlorosilane (peroxide catalyst)

Reaction of trichlorosilane with vinyl 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 Vinyltrichlorosilane 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 Vinyltrichlorosilane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Vinyltrichlorosilane?

Vinyltrichlorosilane appears as a colorless to pale yellow fuming liquid with a pungent odor. Vapor and liquid may cause burns. More dense than water. Vapors are heavier than air.

What is the CAS number of Vinyltrichlorosilane?

The CAS registry number of Vinyltrichlorosilane is 75-94-5.

What is the molecular formula and weight of Vinyltrichlorosilane?

The molecular formula of Vinyltrichlorosilane is C2H3Cl3Si and its molar mass is 161.49 g/mol.

What is Vinyltrichlorosilane used for?

Monomer for copolymers in water repellents, electrical insulating resins, and high temp resins for paints. Intermediate for silicones, coupling agent in adhesives and bonds. Industrial uses: Intermediate.

Is Vinyltrichlorosilane hazardous?

Vinyltrichlorosilane carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, harmful if swallowed, toxic in contact with skin. toxic if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Vinyltrichlorosilane?

Vinyltrichlorosilane 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 Vinyltrichlorosilane?

CompoundList lists 8 suppliers of Vinyltrichlorosilane in China, United States and Netherlands. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Vinyltrichlorosilane?

Suppliers quote Vinyltrichlorosilane 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 Vinyltrichlorosilane

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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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