Description

4-(Trimethoxysilyl)Butanal is a bifunctional organosilane coupling agent featuring both a reactive aldehyde group and hydrolyzable methoxysilane groups. This unique molecular structure enables it to act as a versatile chemical bridge, promoting adhesion between organic polymers and inorganic substrates. It is essential for formulators and manufacturers seeking to enhance the durability, mechanical properties, and environmental resistance of composite materials. Key industries that utilize this compound include advanced coatings, adhesives, sealants, and specialty polymer synthesis.

Application

• Silane Coupling Agent: Primarily used to improve the interfacial bonding between organic resins (e.g., epoxies, polyurethanes) and inorganic fillers (e.g., glass, minerals, metals) in composite materials.
• Surface Modification: Functionalizes the surface of glass fibers, silica, and other minerals to enhance compatibility and dispersion within polymer matrices.
• Adhesive & Sealant Formulations: Incorporated to boost adhesion to difficult substrates like glass, aluminum, and coated metals, improving peel strength and moisture resistance.
• Crosslinking Agent: Serves as a crosslinker in polymer systems, contributing to the formation of stable, three-dimensional networks that improve thermal and chemical stability.
• Primers and Adhesion Promoters: A key ingredient in primer coatings for automotive, aerospace, and construction applications to ensure long-lasting paint adhesion.
• Specialty Polymer Synthesis: Used as a monomer or intermediate in the synthesis of modified silicones, hybrid organic-inorganic polymers (ORMOSILs), and dendrimers.

Basic Information

Product Name	4-(Trimethoxysilyl)Butanal
CAS No.	501004-24-6
Molecular Formula	C7H16O4Si
Molecular Weight	192.29 g/mol
Synonyms	4-(Trimethoxysilyl)butyraldehyde; Butanal, 4-(trimethoxysilyl)-; 4-Trimethoxysilylbutanal; γ-Trimethoxysilylbutyraldehyde; (3-Formylpropyl)trimethoxysilane; 4-(Trimethoxysilyl)-1-butanal; 4-Trimethoxysilyl-1-butanal; 3-(Trimethoxysilyl)propanal (common misnomer, correct is 4-)
EINECS	Contact for details

Quality Control

Our production of 4-(Trimethoxysilyl)Butanal adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR) spectroscopy, to verify identity, assay, and impurity profiles. We are committed to supplying material that meets the exacting standards required for industrial and research applications. Certificates of Analysis (COA) detailing all test results are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C (59-77°F). Due to its hygroscopic (moisture-sensitive) and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) after opening to maintain product integrity and prevent degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20/D)	1.420 - 1.430
Density (g/mL, 25°C)	1.00 - 1.05

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