Description

(3,3-Diethoxypropyl)Triethoxysilane is a versatile organosilicon coupling agent characterized by its unique bifunctional structure, containing both alkoxysilane and acetal groups. This compound is essential for creating durable chemical bridges between inorganic substrates and organic polymers, significantly enhancing adhesion, dispersion, and mechanical properties in composite materials. It is a critical raw material for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced material science applications requiring surface modification.

Application

• Surface Modification Agent: Used to treat glass fibers, minerals, and metal oxides to improve their compatibility and bonding with polymer matrices in composites.
• Adhesion Promoter: Enhances the adhesion of paints, inks, and coatings to difficult substrates like metals, glass, and plastics.
• Crosslinking Agent: Functions as a co-monomer or crosslinker in silicone and organic polymer systems to improve thermal stability and mechanical strength.
• Filler Treatment: Modifies the surface of silica, clay, and other fillers to reduce viscosity and improve dispersion in rubber and plastic compounds.
• Primer Formulation: A key ingredient in primer solutions for automotive, aerospace, and construction applications to ensure long-lasting bonds.
• Waterproofing Agent: Imparts hydrophobic properties to construction materials like concrete and stone.
• Electronic Encapsulants: Used in the formulation of protective coatings and encapsulants for electronic components.

Basic Information

Product Name	(3,3-Diethoxypropyl)Triethoxysilane
CAS No.	15184-27-7
Molecular Formula	C13H30O5Si
Molecular Weight	294.46 g/mol
Synonyms	3-(Triethoxysilyl)propionaldehyde diethyl acetal; Triethoxy(3,3-diethoxypropyl)silane; (3,3-Diethoxypropyl)triethoxysilane; Silane, triethoxy(3,3-diethoxypropyl)-; Propionaldehyde, 3-(triethoxysilyl)-, diethyl acetal; DEPS; Acetaldehyde, (3-triethoxysilylpropyl)-, diethyl acetal
EINECS	239-230-4

Quality Control

Our (3,3-Diethoxypropyl)Triethoxysilane is produced under a strict quality management system. Every batch undergoes rigorous analytical testing, including gas chromatography (GC) and infrared spectroscopy (IR), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are available upon request to support your quality assurance and regulatory needs.

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 and highly volatile nature, the container must be kept tightly sealed under dry conditions to prevent moisture absorption and evaporation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Purity (GC)	≥ 97.0%
Refractive Index (n20/D)	1.405 - 1.415
Density (20°C)	0.92 - 0.96 g/mL

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