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Home> Encyclopedia >Pharmaceutical Intermediates>Organic Intermediates>Organic Intermediate
Vinyltrimethylsilane structure
Vinyltrimethylsilane structure


Iupac Name:ethenyl(trimethyl)silane
CAS No.: 754-05-2
Molecular Weight:100.236
Modify Date.: 2022-11-29 02:57

clear colourless liquid


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1. Names and Identifiers
1.1 Name
1.2 Synonyms

(Trimethylsilyl)ethene (TRIMETHYLSILYL)ETHYLENE CH2=CHSi(CH3)3 ethenyltrimethyl-silan Ethenyltrimethylsilane NSC 93553 Silane, ethenyltrimethyl- Silane, trimethylvinyl- silane,trimethylvinyl- Trimethylvinylsilane Vinyltrimethylsilane, VTMS Vinyltrimethysilane W 139

1.3 CAS No.
1.4 CID
1.6 Molecular Formula
C5H12Si (isomer)
1.7 Inchi
1.8 InChkey
1.9 Canonical Smiles
1.10 Isomers Smiles
2. Properties
2.1 Density
2.1 Melting point
2.1 Boiling point
2.1 Refractive index
2.1 Flash Point
2.1 Precise Quality
2.1 PSA
2.1 logP
2.1 Solubility
Miscible with tetrahydrofuran, diethyl ether, benzene and dichloromethane.
2.2 Appearance
2.3 Storage
Ambient temperatures.
2.4 Chemical Properties
clear colourless liquid
2.5 Water Solubility
Miscible with tetrahydrofuran, diethyl ether, benzene and dichloromethane.
2.6 StorageTemp
Flammables area
3. Use and Manufacturing
3.1 GHS Classification
Signal: Danger
GHS Hazard Statements
Aggregated GHS information provided by 47 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]
H302 (48.94%): Harmful if swallowed [Warning Acute toxicity, oral]
H315 (57.45%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (57.45%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (53.19%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown.

Precautionary Statement Codes
P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301+P312, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, and P501
3.2 Purification Methods
If the 1H NMR spectrum shows impurities, then dissolve it in Et2O, wash it with aqueous NH4Cl solution, dry over CaCl2, filter, evaporate and distil it at atmospheric pressure in an inert atmosphere. It is used as a co-polymer and may polymerise in the presence of free radicals. It is soluble in CH2Cl2. [Nagel & Post J Org Chem 17 1379 1952, Beilstein 4 IV 3922.] Vinyltrimethylsilane Preparation Products And Raw materials Preparation Products
3.3 Usage
Preparation of silyl-ethers by Rh(I) catalysis.1
4. Safety and Handling
4.1 Symbol
4.1 Hazard Codes
F; Xn
4.1 Signal Word
4.1 Risk Statements
4.1 Safety Statements
4.1 Packing Group
4.1 Hazard Class
4.1 Hazard Declaration
H225; H302; H315; H319; H335; H351
UN 1993
4.1 Caution Statement
P210-P280-P301 + P312 + P330-P305 + P351 + P338-P370 + P378-P403 + P235
4.1 WGK Germany

2.Hazard identification

2.1 Classification of the substance or mixture

Flammable liquids, Category 2

Acute toxicity - Oral, Category 4

Skin irritation, Category 2

Eye irritation, Category 2

Specific target organ toxicity \u2013 single exposure, Category 3

2.2 GHS label elements, including precautionary statements

Signal word


Hazard statement(s)

H225 Highly flammable liquid and vapour

H302 Harmful if swallowed

H315 Causes skin irritation

H319 Causes serious eye irritation

H335 May cause respiratory irritation

Precautionary statement(s)

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.

P233 Keep container tightly closed.

P240 Ground and bond container and receiving equipment.

P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment.

P242 Use non-sparking tools.

P243 Take action to prevent static discharges.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P271 Use only outdoors or in a well-ventilated area.


P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].

P370+P378 In case of fire: Use ... to extinguish.

P301+P312 IF SWALLOWED: Call a POISON CENTER/doctor/\u2026if you feel unwell.

P330 Rinse mouth.

P302+P352 IF ON SKIN: Wash with plenty of water/...

P321 Specific treatment (see ... on this label).

P332+P313 If skin irritation occurs: Get medical advice/attention.

P362+P364 Take off contaminated clothing and wash it before reuse.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P337+P313 If eye irritation persists: Get medical advice/attention.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P312 Call a POISON CENTER/doctor/\u2026if you feel unwell.


P403+P235 Store in a well-ventilated place. Keep cool.

P403+P233 Store in a well-ventilated place. Keep container tightly closed.

P405 Store locked up.


P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification


9. Other Information
9.0 Manufacturing Info
Computer and electronic product manufacturing|Silane, ethenyltrimethyl-: ACTIVE
9.1 Usage
Vinyltrimethylsilane is used in semiconductor processing. It is involved in the Preparation of silyl-ethers by Rh(I) catalysis. Further, it is used in the preparation of trimethylsilylethyl sulfoxides which in the presence of fluoride ion generate sulfenate nucleophiles.
10. Computational chemical data
  • Molecular Weight: 100.236g/mol
  • Molecular Formula: C5H12Si
  • Compound Is Canonicalized: True
  • XLogP3-AA: null
  • Exact Mass: 100.070826917
  • Monoisotopic Mass: 100.070826917
  • Complexity: 49.4
  • Rotatable Bond Count: 1
  • Hydrogen Bond Donor Count: 0
  • Hydrogen Bond Acceptor Count: 0
  • Topological Polar Surface Area: 0
  • Heavy Atom Count: 6
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count: 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Isotope Atom Count: 0
  • Covalently-Bonded Unit Count: 1
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