Description

Octamethoxytrisilane is a versatile organosilicon compound widely used as a key precursor in advanced material synthesis. Its value lies in its ability to form stable silicon-oxygen networks, making it essential for creating high-performance coatings and inorganic-organic hybrid materials. This product is primarily needed by manufacturers in the electronics, specialty chemicals, and advanced ceramics industries for applications requiring precise surface modification and controlled deposition.

Application

• Precursor for Sol-Gel Processes: Used in the synthesis of silica-based gels, glasses, and thin films with controlled porosity and refractive index.
• Surface Modification Agent: Imparts hydrophobic or specific functional properties to glass, metals, and polymers.
• Crosslinking Agent: Serves as a building block in the production of silicone resins and high-temperature stable polymers.
• Electronic Materials: Employed in the deposition of silicon oxide (SiOx) layers for semiconductor devices and optical coatings.
• Adhesive & Sealant Formulations: Enhances the thermal and chemical resistance of specialty adhesives.
• Catalyst and Reagent: Acts as a reagent in organic synthesis and catalysis for introducing silicon moieties.

Basic Information

Product Name	Octamethoxytrisilane
CAS No.	49582-74-3
Molecular Formula	C8H24O8Si3
Molecular Weight	332.53 g/mol
Synonyms	Trisiloxane, octamethoxy-; Octamethoxycyclotrisiloxane; 2,2,4,4,6,6,8,8-Octamethoxy-1,3,5,7,2,4,6,8-tetraoxatetrasilecane; Cyclotrisiloxane, octamethoxy-; Hexamethoxytrisiloxane (common misnomer); OMTS; Tris(trimethoxysilyl) ether (related structure)
EINECS	Contact for details

Quality Control

Our Octamethoxytrisilane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay and impurity profiling. Certificates of Analysis (COA) documenting purity, identity, and key physical parameters are available for 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC or NMR)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.05 g/cm³
Refractive Index (n20D)	~1.385

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