Description

Methyldimethoxysilane is a versatile organosilicon compound widely used as a key building block and surface modifying agent. Its high reactivity makes it an essential intermediate for synthesizing silicone polymers, resins, and specialty silanes. This product is particularly valuable in industries requiring precise surface treatment and adhesion promotion, such as coatings, electronics, and advanced composites. We supply high-purity Methyldimethoxysilane CAS NO 16881-77-9 to meet the stringent demands of global industrial and research applications.

Application

• Silicone Intermediate: A crucial precursor in the synthesis of silicone oils, resins, and elastomers.
• Surface Modification: Used as a coupling agent to improve adhesion between organic polymers and inorganic surfaces like glass, metals, and minerals.
• Crosslinking Agent: Employed in moisture-curable sealants, adhesives, and RTV (Room Temperature Vulcanizing) silicone rubbers.
• Water Repellency: Imparts hydrophobic properties to construction materials, textiles, and stone.
• Filler Treatment: Enhances the dispersion and compatibility of silica and other mineral fillers in composite materials.
• Electronics & Optics: Serves in the production of protective coatings and dielectric layers for electronic components and optical fibers.
• Pharmaceutical Synthesis: Acts as a protecting or silylating agent in the synthesis of complex organic molecules.

Basic Information

Product Name	Methyldimethoxysilane
CAS No.	16881-77-9
Molecular Formula	C3H10O2Si
Molecular Weight	106.20 g/mol
Synonyms	Methyl Dimethoxysilane; Dimethoxymethylsilane; Methyldimethoxy Silane; Methyl(dimethoxy)silane; Silane, dimethoxymethyl-; Dynasylan® M; M 9050; (Dimethoxymethyl)silane
EINECS	240-915-5

Quality Control

Our Methyldimethoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent performance. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, identity, and impurity profiles. Our quality commitment ensures reliability for your critical synthesis and formulation processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flame. Due to its highly volatile and moisture-sensitive nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent hydrolysis and maintain purity. Recommended storage temperature is 2-25°C.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Density (20°C)	0.86 - 0.88 g/mL
Refractive Index (n20D)	1.368 - 1.372
Water Content (KF)	≤ 0.1 %

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