Description

Methoxytrimethylsilane is a versatile organosilicon compound, also known as Methyl Trimethoxysilane, serving as a key reagent and building block in advanced material synthesis. Its primary value lies in its ability to act as a silylating agent and a precursor for silicon-based polymers and coatings, offering excellent moisture resistance and adhesion promotion. This product is essential for manufacturers in the pharmaceutical intermediates, silicone resins, and surface treatment sectors, where precise chemical modification and reliable performance are critical.

Application

• Silylating Agent: Used to protect reactive functional groups (e.g., -OH, -NH) in the synthesis of pharmaceutical intermediates and fine chemicals.
• Silane Coupling Agent: Improves adhesion between organic polymers and inorganic surfaces like glass, metals, and minerals in composite materials.
• Precursor for Silicone Resins: A key monomer in the production of methylsilsesquioxane (MSQ) resins and other silicone-based polymers for high-temperature and dielectric applications.
• Surface Hydrophobization: Imparts water-repellent properties to surfaces in construction materials, textiles, and paper treatments.
• Crosslinking Agent: Used in room-temperature vulcanizing (RTV) silicone rubbers and sealants to enhance mechanical properties.
• Chemical Intermediate: Serves as a starting material for the synthesis of more complex functional silanes and siloxanes.

Basic Information

Product Name	Methoxytrimethylsilane
CAS No.	1825-61-2
Molecular Formula	C4H12O3Si
Molecular Weight	136.22 g/mol
Synonyms	Methyl Trimethoxysilane; Trimethoxymethylsilane; Methyltrimethoxysilane; Silane, methoxytrimethyl-; Trimethoxy(methyl)silane; NSC 66495; Methylsilanetriol trimethyl ether; Dynasylan MTMS; A-163
EINECS	217-378-8

Quality Control

Our Methoxytrimethylsilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity verification, to ensure it meets the high standards required for industrial and fine chemical synthesis. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and ignition sources. Due to its highly volatile and hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) after opening to prevent degradation. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Density (20°C)	0.950 - 0.960 g/mL
Refractive Index (n20D)	1.368 - 1.372
Water Content (Karl Fischer)	≤ 0.1 %

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