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Silanes and silicones

Vinyltriphenylsilane

Also known as Triphenylvinylsilane, Silane, triphenylvinyl-, ethenyltriphenylsilane

CAS 18666-68-7Formula C20H18SiMolar mass 286.45 g/molEC 242-487-4
GHS signal word: Warning. Pictograms: Harmful or irritant 3 suppliers listed
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Vinyltriphenylsilane chemical structure, C20H18Si, CAS 18666-68-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
18666-68-7
Formula
C20H18Si
Molar mass
286.45 g/mol
EC number
242-487-4
HS code
293190
Category
Silanes and silicones

What is Vinyltriphenylsilane?

Plain description, key identifiers and synonyms

Vinyltriphenylsilane is a chemical substance with the molecular formula C20H18Si and a molar mass of 286.45 g/mol. Its CAS registry number is 18666-68-7. The IUPAC name is ethenyl(triphenyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
ethenyl(triphenyl)silane
CAS number
18666-68-7 CAS number cross-checked
EC number
242-487-4
Molecular formula
C20H18Si
UNII
MYL0PK6N3A
MDL number
MFCD00051542
InChIKey
OVOIHGSHJGMSMZ-UHFFFAOYSA-N
InChI
InChI=1S/C20H18Si/c1-2-21(18-12-6-3-7-13-18,19-14-8-4-9-15-19)20-16-10-5-11-17-20/h2-17H,1H2
SMILES (canonical and isomeric)
C=C[Si](C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3

Synonyms

  • Triphenylvinylsilane
  • Silane, triphenylvinyl-
  • ethenyltriphenylsilane
  • Silane, ethenyltriphenyl-
  • Triphenylsilylethylene
  • Benzene, 1,1',1''-(ethenylsilylidyne)tris-
  • 1,1',1''-(Ethenylsilylidyne)tris(benzene)
  • Triphenyl(vinyl)silane
  • ethenyl(triphenyl)silane
  • vinyl triphenyl silane
  • Triphenyl-vinyl-silane
  • Ethenyltriphenylsilan
  • (Triphenylsilyl)ethylene
  • C20H18Si
  • Silane, eth
  • vinyltriphenyl silane
  • Ph3SiCH=CH2
  • Ethenyltri(phenyl)silane
  • Triphenyl(vinyl)silane, 98%
  • (Triphenylsilyl)ethylene, Ethenyltriphenylsilan, Vinyltriphenylsilane

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
286.45 g/molcalc.
Exact mass
286.1178 Dacalc.
LogP (octanol/water)
2.88calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
4calc.
Heavy atoms
21calc.
Rings
3calc.
Aromatic rings
3calc.
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.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc([SiH](c2ccccc2)c2ccccc2)cc1

c1ccc([SiH](c2ccccc2)c2ccccc2)cc1

3 rings, 19 atoms, the Triphenylsilane ring system.

196 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

Vinyltriphenylsilane suppliers

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All 3 suppliers

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Where suppliers are based

3 suppliers in 3 countries

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

Frequently asked questions

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

What is Vinyltriphenylsilane?

Vinyltriphenylsilane is a chemical substance with the molecular formula C20H18Si and a molar mass of 286.45 g/mol. Its CAS registry number is 18666-68-7. The IUPAC name is ethenyl(triphenyl)silane.

What is the CAS number of Vinyltriphenylsilane?

The CAS registry number of Vinyltriphenylsilane is 18666-68-7.

What is the molecular formula and weight of Vinyltriphenylsilane?

The molecular formula of Vinyltriphenylsilane is C20H18Si and its molar mass is 286.45 g/mol.

Is Vinyltriphenylsilane hazardous?

Vinyltriphenylsilane carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Vinyltriphenylsilane?

Vinyltriphenylsilane 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 Vinyltriphenylsilane?

CompoundList lists 3 suppliers of Vinyltriphenylsilane in Germany, Russia and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Vinyltriphenylsilane?

Suppliers quote Vinyltriphenylsilane 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 Vinyltriphenylsilane

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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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