Description

3-Butenyltriethoxysilane is a versatile organosilicon coupling agent featuring a reactive terminal alkene group and hydrolyzable ethoxy groups. This bifunctional structure is critical for creating durable covalent bonds between inorganic substrates and organic polymers, significantly enhancing composite material performance. It is essential for manufacturers in the adhesives, sealants, coatings, and reinforced plastics industries seeking to improve adhesion, mechanical strength, and environmental resistance in their products.

Application

• As a coupling agent and adhesion promoter in mineral-filled composites (e.g., fiberglass, talc, clay) for improved mechanical properties.
• Surface modification of glass fibers and fillers to enhance bonding with epoxy, polyester, and polyurethane resins.
• A key intermediate in the synthesis of specialty silicone polymers and crosslinking agents via hydrosilylation reactions.
• Improving the water resistance and durability of mineral-based coatings and sealants.
• Enhancing the interfacial adhesion in rubber-to-metal bonding applications.
• Used in the preparation of silyl-modified polymers (SMP) for high-performance sealants and adhesives.
• Potential applications in crosslinked polyethylene (PEX) and other polyolefin modifications.

Basic Information

Product Name	3-Butenyltriethoxysilane
CAS No.	57813-67-9
Molecular Formula	C10H22O3Si
Molecular Weight	218.37 g/mol
Synonyms	Triethoxy(3-butenyl)silane; But-3-en-1-yltriethoxysilane; 3-Buten-1-yltriethoxysilane; Vinyltriethoxysilane, butenyl-; Silane, triethoxy-3-butenyl-; (3-Butenyl)triethoxysilane; Allyltriethoxysilane, 3-butenyl- analog
EINECS	Contact for details

Quality Control

Our 3-Butenyltriethoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and FT-IR spectroscopy, to ensure high purity and consistent performance. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and specific impurity profiles is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can lead to hydrolysis and polymerization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.90 - 0.92 g/mL
Refractive Index (n20D)	1.410 - 1.415

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