Description

Vinyltri-T-Butoxysilane is a specialized organosilicon coupling agent featuring a reactive vinyl group and hydrolyzable tert-butoxy silane functionalities. This compound is essential for modifying material interfaces, enhancing adhesion between organic polymers and inorganic substrates. It is primarily utilized by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced composites and surface treatment formulations.

Application

• As a coupling agent in mineral-filled composites (e.g., talc, silica) to improve mechanical properties and dispersion.
• A key crosslinking agent and adhesion promoter in silicone-modified organic polymers and hybrid coatings.
• Surface treatment of glass fibers, fillers, and pigments to enhance bonding with vinyl-based resin matrices.
• Used in the synthesis of specialty silane-modified polymers (SMP) for high-performance sealants and adhesives.
• As a precursor for creating hydrophobic and oleophobic surface coatings on various substrates.
• An intermediate in the production of other functional silanes and silicone resins.
• Improving the water resistance and durability of mineral-based building materials.

Basic Information

Product Name	Vinyltri-T-Butoxysilane
CAS No.	5356-88-7
Molecular Formula	C14H30O3Si
Molecular Weight	274.48 g/mol
Synonyms	Vinyltris(tert-butoxy)silane; Tris(tert-butoxy)vinylsilane; Vinyltri(tert-butoxy)silane; VTBS; Silane, vinyltris(1,1-dimethylethoxy)-; Vinyl tris-tert-butoxysilane; 1,1-Dimethylethoxy(ethenyl)dimethylsilane (related); Vinyl silane ester
EINECS	226-336-7

Quality Control

Our Vinyltri-T-Butoxysilane is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay and purity verification by GC or HPLC, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing all relevant parameters is provided with every shipment to guarantee traceability and compliance with your requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed to prevent degradation by atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.88 - 0.92 g/cm³
Refractive Index (n20/D)	1.405 - 1.415
Moisture (Karl Fischer)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.