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Vinyltrimethoxysilane structure
Vinyltrimethoxysilane structure

Vinyltrimethoxysilane

Iupac Name:ethenyl(trimethoxy)silane
CAS No.: 2768-02-7
Molecular Weight:148.23
Modify Date.: 2022-11-25 02:13
Introduction: Vinyltrimethoxysilane, is used as a polymer modifier via grafting reactions. The resulting pendant trimethoxysilyl groups can function as moisture-activated crosslinking sites. The Silane grafted polymer is processed as a thermoplastic and crosslinking occurs after fabrication of the finished article upon exposure to moisture.Vinyltrimethoxysilane is mainly applied in these aspects:In the preparation of moisture-curing polymers, e.g. polyethylene. Silane crosslinked polyethylene is widely used as cable isolation, and sheathing mainly in low voltage applications as well as for hot water/sanitary pipes and underfloor heating.As a co-monomer for the preparation of different polymers such as polyethylene or acrylics. Those polymers show an improved adhesion to inorganic surfaces and they can also be crosslinked with moisture.As an efficient adhesion promoter for various mineral-filled polymers, improving mechanical and electrical properties especially after exposure to moisture.Improving the compatibility of fillers with polymers, leading to a better dispersibility, reduced melt viscosity and easier processing of filled plastics.Pre-treating of glass, metals, or ceramic surfaces, improve the adhesion of coatings on these surfaces and corrosion resistance.As moisture scavenger, it reacts rapidly with water. This effect is used widely in sealants. View more+
1. Names and Identifiers
1.1 Name
Vinyltrimethoxysilane
1.2 Synonyms

(trimethoxysilyl)ethene (TRIMETHOXYSILYL)ETHYLENE a171 CV-4917 DOW CORNING(R) PRODUCT Q9-6300 Dynasylan VTMO EINECS 220-449-8 ethenyl(trimethoxy)silane ETHENYLTRIMETHOXYSILAN kbm1003 MFCD00008605 Silane, ethenyltrimethoxy- sz6300 Tri-Methoxy Vinyl Silane (Vtmos) (Vinyltrimethoxy Silane ) Trimethoxy(vinyl)silane TRIMETHOXYVINYLSILANE v4917 vinyl trimethoxy silane vinyl trimethoxysilane VTMO VTMS vts-m y4302

1.3 CAS No.
2768-02-7
1.4 CID
76004
1.5 EINECS(EC#)
220-449-8
1.6 Molecular Formula
C5H12O3Si (isomer)
1.7 Inchi
InChI=1S/C5H12O3Si/c1-5-9(6-2,7-3)8-4/h5H,1H2,2-4H3
1.8 InChkey
NKSJNEHGWDZZQF-UHFFFAOYSA-N
1.9 Canonical Smiles
CO[Si](C=C)(OC)OC
1.10 Isomers Smiles
CO[Si](C=C)(OC)OC
2. Properties
2.1 Density
0.971 g/mL at 25 °C(lit.)
2.1 Melting point
<-70°C
2.1 Boiling point
123 °C(lit.)
2.1 Refractive index
n20/D 1.392(lit.)
2.1 Flash Point
73 °F
2.1 Precise Quality
148.05600
2.1 PSA
27.69000
2.1 logP
0.58970
2.1 Appearance
Liquid; OtherSolid; WetSolid
2.2 Storage
Moisture Sensitive. Ambient temperatures.
2.3 Chemical Properties
Colorless transparent liquid Vinyltrimethoxysilane Preparation Products And Raw materials Raw materials
2.4 Water Solubility
H2O: slightly soluble
2.5 StorageTemp
Store below +30°C.
3. Use and Manufacturing
3.1 GHS Classification
Signal: Danger
GHS Hazard Statements
Aggregated GHS information provided by 840 companies from 22 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Reported as not meeting GHS hazard criteria by 66 of 840 companies. For more detailed information, please visit ECHA C&L website

Of the 21 notification(s) provided by 774 of 840 companies with hazard statement code(s):

H226 (48.06%): Flammable liquid and vapor [Warning Flammable liquids]
H315 (17.31%): Causes skin irritation [Warning Skin corrosion/irritation]
H318 (46.12%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
H319 (17.05%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H332 (45.35%): Harmful if inhaled [Warning Acute toxicity, inhalation]

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, P271, P280, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P235, and P501
4. Safety and Handling
4.1 Symbol
GHS02;GHS07;
4.1 Hazard Codes
Xi
4.1 Signal Word
DANGER
4.1 Risk Statements
10-36/37/38-20
4.1 Safety Statements
26-36/37/39-37/39-16
4.1 Packing Group
III
4.1 Hazard Class
3
4.1 Hazard Declaration
H225; H332
4.1 RIDADR
UN 1993 3/PG 2
4.1 Caution Statement
P210
4.1 WGK Germany
1
4.1 RTECS
VV6770000
4.1 Report

Reported in EPA TSCA Inventory.

4.2 Safety

A skin and eye irritant. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes:?IrritantXi
Risk Statements: 10-36/37/38?
R10: Flammable
R36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements: 26-36/37/39-37/39-16?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection?
S37/39: Wear suitable gloves and eye/face protection
S16: Keep away from sources of ignition
RIDADR: UN 1993 3/PG 2
WGK Germany: 1
RTECS: VV6770000
F: 10-21?
F 10: Keep under argon
F 21: Sensitive to humidity.
TSCA: Yes
HazardClass: 3
PackingGroup: III
HS Code: 29310095

4.3 Sensitive
Moisture Sensitive
4.4 Specification

?Vinyltrimethoxysilane (CAS NO.2768-02-7) is also called as?(Trimethoxysilyl)ethene ;?Silane, ethenyltrimethoxy- ; Trimethoxyvinylsilane ;?Vinyl trimethoxy silane?;?Silane, ethenyltrimethoxy- ; Silane, trimethoxyvinyl- ;?Silane, trimethoxyvinyl- .Storage of Vinyltrimethoxysilane (2768-02-7): Always keep in containers of same material as the original one. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Keep away from water. Protect from heat and direct sunlight. Protect from atmospheric moisture and water. Keep container tightly closed and dry in a cool, well-ventilated place.

4.5 Toxicity
LD50 orally in Rabbit: 7120 mg/kg LD50 dermal Rabbit 3259 mg/kg
5. MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Flammable liquids, Category 3

Acute toxicity - Inhalation, Category 4

Specific target organ toxicity \u2013 repeated exposure, Category 2

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word

Danger

Hazard statement(s)

H226 Flammable liquid and vapour

H332 Harmful if inhaled

H373 May cause damage to organs through prolonged or repeated exposure

Precautionary statement(s)
Prevention

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.

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

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

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

Response

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.

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

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

P314 Get medical advice/attention if you feel unwell.

Storage

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

Disposal

P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

9. Other Information
9.0 Mesh Entry Terms
trimethoxyvinylsilane
9.1 Production
1,000,000 - 10,000,000 lb
9.2 Manufacturing Info
Adhesive manufacturing|Silane, ethenyltrimethoxy-: ACTIVE
9.3 Usage
Trimethoxyvinylsilane is used as a chemical intermediate in the production of other fine chemicals or as a monomer in the production of vinyl functional silicone polymers. The use of Trimethoxyvinylsilane in coatings is intended to improve bonding or adhesion between organic polymers and mineral surfaces, such as pigments, fillers, and glass or metal substrates. It is used in water-based decorative coating products. It is also used as a as cross-linking agent and adhesion promoter in commercially-available silicone sealant product.
9.4 BRN
1099136
9.5 Description
Vinyltrimethoxysilane, is used as a polymer modifier via grafting reactions. The resulting pendant trimethoxysilyl groups can function as moisture-activated crosslinking sites. The Silane grafted polymer is processed as a thermoplastic and crosslinking occurs after fabrication of the finished article upon exposure to moisture.

Vinyltrimethoxysilane is mainly applied in these aspects:
  1. In the preparation of moisture-curing polymers, e.g. polyethylene. Silane crosslinked polyethylene is widely used as cable isolation, and sheathing mainly in low voltage applications as well as for hot water/sanitary pipes and underfloor heating.
  2. As a co-monomer for the preparation of different polymers such as polyethylene or acrylics. Those polymers show an improved adhesion to inorganic surfaces and they can also be crosslinked with moisture.
  3. As an efficient adhesion promoter for various mineral-filled polymers, improving mechanical and electrical properties especially after exposure to moisture.
  4. Improving the compatibility of fillers with polymers, leading to a better dispersibility, reduced melt viscosity and easier processing of filled plastics.
  5. Pre-treating of glass, metals, or ceramic surfaces, improve the adhesion of coatings on these surfaces and corrosion resistance.
  6. As moisture scavenger, it reacts rapidly with water. This effect is used widely in sealants.
9.6 Chemical Properties
Colorless transparent liquid
9.7 Uses
VTMS may be used to provide superhydrophobicity to different materials like TiO2, talc, kaolin, magnesium oxide nanoparticles, ammonium phosphate and PEDOT. It modifies the surface by capping the material and creates a protective layer that is water resistant and can be used in major coating industries.
10. Computational chemical data
  • Molecular Weight: 148.23g/mol
  • Molecular Formula: C5H12O3Si
  • Compound Is Canonicalized: True
  • XLogP3-AA: null
  • Exact Mass: 148.05557077
  • Monoisotopic Mass: 148.05557077
  • Complexity: 81.9
  • Rotatable Bond Count: 4
  • Hydrogen Bond Donor Count: 0
  • Hydrogen Bond Acceptor Count: 3
  • Topological Polar Surface Area: 27.7
  • Heavy Atom Count: 9
  • 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
  • CACTVS Substructure Key Fingerprint: AAADccBgMAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGhAAAEAAAACAIAJCAAAAAACAAAACAAAAAAAAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
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