Description

Diethoxymethylsilane is a versatile organosilicon compound primarily used as a key building block in silicone chemistry. Its bifunctional nature, featuring both hydrolyzable ethoxy groups and a stable methyl group, makes it an essential precursor for modifying surfaces and synthesizing specialized silicone polymers. This chemical is particularly valuable for industries requiring precise control over material properties, such as adhesives, coatings, and electronics. Its reactivity profile allows for the creation of tailored siloxane structures with specific performance characteristics.

Application

• Silicone Intermediate: A fundamental monomer for the synthesis of methyl-modified siloxane polymers and resins.
• Surface Treatment & Coupling Agent: Used to impart hydrophobic properties and improve adhesion between organic polymers and inorganic substrates like glass, metals, and minerals.
• Adhesive & Sealant Formulation: Acts as a cross-linking agent and moisture scavenger in silicone-based sealants and adhesives, enhancing cure performance and durability.
• Protective Coatings: Employed in the formulation of water-repellent and corrosion-resistant coatings for construction and industrial materials.
• Electronics & Semiconductor Processing: Used in the deposition of silicon-containing thin films and as a precursor in chemical vapor deposition (CVD) processes.
• Pharmaceutical & Agrochemical Intermediates: Serves as a protecting group or synthetic intermediate in the production of more complex molecules.
• Rubber & Plastic Additive: Functions as a cross-linker and processing aid to modify the properties of silicone rubbers and plastics.

Basic Information

Product Name	Diethoxymethylsilane
CAS No.	2031-62-1
Molecular Formula	C5H14O2Si
Molecular Weight	134.25 g/mol
Synonyms	Methyldiethoxysilane; Diethoxy(methyl)silane; Methyl diethoxysilane; Silane, diethoxymethyl-; (Diethoxy)methylsilane; Methylsilanediol diethyl ether; EINECS 217-985-0; MDES
EINECS	217-985-0

Quality Control

Our Diethoxymethylsilane is manufactured under strict 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 precise customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment. We support compliance with global regulatory frameworks, including REACH.

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 highly volatile and hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to prevent moisture absorption and degradation. Keep away from heat, sparks, and open flame.

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)	1.380 - 1.385
Water Content (Karl Fischer)	≤ 0.1 %

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