Description

Diethoxydimethylsilane is a versatile organosilicon compound that serves as a key intermediate in the synthesis of silicone polymers and as a surface-modifying agent. Its bifunctional ethoxy groups make it a valuable precursor for introducing dimethylsiloxane units into various chemical structures, enabling precise control over material properties. This chemical is essential for manufacturers in the silicone, pharmaceutical, and advanced materials sectors seeking to enhance product performance and process efficiency.

Application

• Silicone Polymer Synthesis: A fundamental monomer and chain extender for producing polydimethylsiloxanes (PDMS) and other silicone resins.
• Surface Hydrophobization: Used as a coupling agent to impart water-repellent properties to glass, minerals, and fillers.
• Pharmaceutical Intermediates: Serves as a protecting group or building block in the synthesis of active pharmaceutical ingredients (APIs) and silicon-containing drugs.
• Adhesive & Sealant Formulations: Acts as a cross-linking agent and adhesion promoter in high-performance silicone-based adhesives and sealants.
• Coating Additives: Incorporated into coatings to improve weather resistance, gloss, and surface slip.
• Rubber & Elastomer Processing: Functions as a processing aid and internal release agent in silicone rubber manufacturing.
• Nanomaterial Functionalization: Used to modify the surface of silica nanoparticles and other nanomaterials for composite applications.
• Laboratory Reagent: Employed in organic synthesis for silylation reactions to protect alcohols or create silicon-carbon bonds.

Basic Information

Product Name	Diethoxydimethylsilane
CAS No.	78-62-6
Molecular Formula	C6H16O2Si
Molecular Weight	148.28 g/mol
Synonyms	Dimethyldiethoxysilane; Diethoxy(dimethyl)silane; Dimethyl diethoxysilane; Diethoxydimethylsilane; Silane, diethoxydimethyl-; Diethoxy(dimethyl)silane; DMDEOS; EINECS 201-127-6
EINECS	201-127-6

Quality Control

Our Diethoxydimethylsilane is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including gas chromatography (GC) for assay and impurity profiling, to meet exacting customer specifications. Certificates of Analysis (COA) detailing all test results are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (20°C)	0.85 - 0.87 g/mL
Refractive Index (n20D)	1.382 - 1.386
Water Content (KF)	≤ 0.1%

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