Description

Diethyldiethoxysilane is a versatile organosilicon compound that serves as a key intermediate and surface modifying agent. Its bifunctional structure, featuring both ethyl and ethoxy groups, makes it valuable for introducing hydrophobic properties and facilitating cross-linking in various materials. This product is essential for manufacturers in the silicone polymer, coatings, and advanced materials sectors seeking to enhance product performance and durability.

Application

• Silicone Resin & Polymer Modification: Acts as a cross-linking agent and monomer for synthesizing specialized silicone resins and elastomers.
• Surface Treatment & Hydrophobic Coatings: Used to impart water-repellent (hydrophobic) characteristics to glass, minerals, and metal oxides.
• Adhesive & Sealant Formulations: Serves as an adhesion promoter and moisture scavenger in high-performance sealants and adhesives.
• Filler & Pigment Treatment: Enhances the compatibility and dispersion of inorganic fillers (like silica) within organic polymer matrices.
• Precursor for Silanes: Utilized as a starting material or intermediate in the synthesis of more complex functional silanes.
• Electronics & Semiconductor Industry: Employed in the deposition of silicon-containing thin films and as a passivation agent.

Basic Information

Product Name	Diethyldiethoxysilane
CAS No.	5021-93-2
Molecular Formula	C8H20O2Si
Molecular Weight	176.33 g/mol
Synonyms	Diethoxydiethylsilane; Diethyl Diethoxysilane; Diethylbis(ethoxy)silane; Diethoxysilyldiethane; Silane, diethoxydiethyl-; Ethylsilane, diethoxydiethyl-; NSC 66419; (Diethoxy)(diethyl)silane
EINECS	225-710-1

Quality Control

Our Diethyldiethoxysilane is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including gas chromatography (GC) for purity and identity verification, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your technical 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). This material is hygroscopic (moisture-sensitive). Keep away from heat, sparks, and open flames. Ensure containers are kept tightly sealed to prevent moisture ingress and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Purity (GC)	≥ 98.0%
Refractive Index (n20D)	1.400 - 1.410
Density (20°C)	0.85 - 0.90 g/mL
Water Content (Karl Fischer)	≤ 0.1%

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