Description

Methyltriacetoxysilane is a versatile organosilicon compound that serves as a key cross-linking agent and precursor in advanced material synthesis. Its value lies in its ability to introduce stable methylsiloxane linkages and act as an efficient acetoxy-functional silane, enabling surface modification and polymer network formation. This chemical is essential for manufacturers in the silicone polymer, adhesive, and coatings industries seeking to enhance product durability and performance.

Application

• Cross-linking Agent for Silicone Polymers: Used to cure room-temperature vulcanizing (RTV) silicone rubbers and sealants, providing excellent adhesion and mechanical properties.
• Surface Treatment & Coupling Agent: Modifies inorganic surfaces like glass, minerals, and metals to improve compatibility with organic resins and polymers in composite materials.
• Moisture-Curable Adhesives & Coatings: Functions as a key ingredient in formulations that cure upon exposure to atmospheric moisture, forming durable, water-resistant films.
• Precursor for Specialty Silanes: Serves as an intermediate in the synthesis of other functional organosilicon compounds for research and high-value applications.
• Water Repellents: Imparts hydrophobic characteristics to construction materials, textiles, and stone.
• Filler Treatment in Composites: Enhances the dispersion and interfacial bonding of fillers (e.g., silica) within plastic and elastomer matrices.

Basic Information

Product Name	Methyltriacetoxysilane
CAS No.	4253-34-3
Molecular Formula	C7H12O6Si
Molecular Weight	220.25 g/mol
Synonyms	Methylsilanetriol triacetate; Triacetoxymethylsilane; Methyltriacetoxysilane; Methyltris(acetoxy)silane; Silane, methyltriacetoxy-; Acetic acid, methylsilanetriyl triester; Methylsilicon triacetate
EINECS	224-221-3

Quality Control

Our Methyltriacetoxysilane is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed against rigorous internal specifications, with key parameters including assay, identity, and impurity profiles. A Certificate of Analysis (COA) documenting these results is provided with every shipment to support your quality assurance protocols.

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 product is hygroscopic (moisture-sensitive) and reacts with moisture; ensure containers are kept tightly sealed to prevent contact with atmospheric humidity. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Density (at 20°C)	1.17 - 1.19 g/cm³
Refractive Index (n20D)	1.405 - 1.415

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