Description

Methyltris(Trimethylsiloxy)Silane is a versatile organosilicon compound, specifically a silane coupling agent and a key building block in silicone chemistry. Its value lies in its ability to introduce hydrophobic, crosslinkable, and surface-modifying properties into various materials. This product is essential for manufacturers in the silicone polymer, coatings, and advanced materials sectors seeking to enhance product performance and durability.

Application

• Silicone Resin & Polymer Synthesis: Acts as a crucial monomer or cross-linking agent in the production of MQ silicone resins, which are used in pressure-sensitive adhesives, release coatings, and high-temperature resistant materials.
• Hydrophobic Surface Treatments: Imparts excellent water repellency to surfaces of glass, ceramics, minerals, and textiles, creating protective and easy-to-clean finishes.
• Coupling Agent for Composites: Improves the adhesion and dispersion of inorganic fillers (like silica) within organic polymer matrices, enhancing the mechanical properties of composite materials.
• Silicone Rubber Modification: Used as a crosslinker or additive to modify the properties of silicone elastomers, influencing their hardness, tensile strength, and thermal stability.
• Intermediate for Specialty Silanes: Serves as a key starting material for the synthesis of more complex, functionalized organosilicon compounds used in advanced applications.
• Waterproofing Additives: Incorporated into coatings, sealants, and construction materials to provide long-lasting waterproofing and moisture barrier characteristics.

Basic Information

Product Name	Methyltris(Trimethylsiloxy)Silane
CAS No.	17928-28-8
Molecular Formula	C10H30O3Si4
Molecular Weight	310.71 g/mol
Synonyms	Methyltris(trimethylsiloxy)silane; Tris(trimethylsiloxy)methylsilane; Methylsilanol trimethylsilyl ether; Methyltris(trimethylsilyloxy)silane; Silane, methyltris(trimethylsiloxy)-; MQ Resin Precursor; MTMS; Contact for additional synonyms.
EINECS	241-872-4

Quality Control

Our production of Methyltris(Trimethylsiloxy)Silane adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including Gas Chromatography (GC) and NMR to verify identity and assay. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to support your quality assurance processes.

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 hygroscopic and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and product loss.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Density (at 25°C)	0.86 - 0.88 g/mL
Refractive Index (n20/D)	1.390 - 1.395
Water Content (KF)	≤ 0.1%

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