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Your Position: Home - Chemicals - What is vinyltrimethoxysilane?

What is vinyltrimethoxysilane?

Vinyltrimethoxysilane is a chemical compound that belongs to the family of organosilicon compounds. It is commonly used as a crosslinker and coupling agent in various industrial applications. Its chemical formula is C5H12O3Si, and it has a molecular weight of 148.23 g/mol. In this article, we will discuss the properties, applications, and safety considerations associated with vinyltrimethoxysilane.

Properties of Vinyltrimethoxysilane

Vinyltrimethoxysilane is a colorless liquid with a pungent odor. It is soluble in polar solvents such as water, alcohols, and ketones but insoluble in nonpolar solvents such as alkanes and aromatic hydrocarbons. It has a boiling point of 129 °C and a flash point of 19 °C. The chemical structure of vinyltrimethoxysilane consists of a vinyl group attached to a trimethoxysilane group.

Applications of Vinyltrimethoxysilane

Vinyltrimethoxysilane finds its application in various industrial sectors. It is commonly used as a crosslinker and coupling agent in the production of adhesives, sealants, coatings, and resins. It enhances the adhesion and durability of these products by forming strong bonds with the substrate surface. It is also used as a water repellent agent in the textile industry and as a surface treatment agent in the production of glass fiber-reinforced composites.

Vinyltrimethoxysilane is also used as a reactive intermediate in the synthesis of other organosilicon compounds such as vinyltriethoxysilane and vinyltris(2-methoxyethoxy)silane. These compounds find their application as modifiers for thermoplastics, thermosets, and elastomers.

Safety Considerations

Vinyltrimethoxysilane is a hazardous chemical and should be handled with care. It is a skin and eye irritant and can cause severe burns upon contact. It is also harmful if ingested or inhaled and can cause respiratory distress, nausea, and vomiting. Therefore, appropriate personal protective equipment (PPE) such as gloves, goggles, and respirators should be worn when handling vinyltrimethoxysilane.

Vinyltrimethoxysilane is also a flammable liquid and can form explosive mixtures with air. Therefore, it should be stored and handled away from heat sources, sparks, and flames. Proper ventilation should be maintained in the working area to prevent the buildup of vapors.


Vinyltrimethoxysilane is a versatile organosilicon compound that finds its application in various industrial sectors. Its unique chemical structure makes it an excellent crosslinker and coupling agent for adhesives, coatings, and resins. However, it should be handled with care due to its hazardous nature. Proper safety precautions should be taken to prevent exposure and minimize the risk of accidents.





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