Description

Octamethylcyclotetrasilazane is a high-purity organosilicon compound belonging to the cyclosilazane family, valued for its role as a versatile chemical intermediate and precursor. Its primary commercial significance lies in its ability to introduce silicon-nitrogen functionalities into advanced materials, enhancing thermal stability and surface properties. This product is essential for manufacturers in the semiconductor, specialty polymers, and advanced ceramics industries seeking to develop high-performance materials.

Application

• Semiconductor Manufacturing: Key precursor for chemical vapor deposition (CVD) and atomic layer deposition (ALD) processes to create silicon nitride (SiN) or silicon carbonitride (SiCN) thin films as diffusion barriers or etch stops.
• Advanced Ceramics & Composites: Used as a preceramic polymer for producing silicon nitride-based ceramics with high thermal and mechanical stability.
• Surface Modification & Coupling Agent: Functionalizes inorganic surfaces (e.g., silica, metals) to improve adhesion, hydrophobicity, and compatibility in composite materials and coatings.
• Specialty Silicone Synthesis: Serves as a building block for synthesizing novel polysilazanes and silicone polymers with tailored properties for high-temperature applications.
• Pharmaceutical Intermediates: Employed in the synthesis of organosilicon compounds with potential biological activity or as protecting groups in complex molecule synthesis.
• Research & Development: Utilized in academic and industrial R&D for exploring new silicon-based materials, including porous materials and hybrid organic-inorganic systems.

Basic Information

Product Name	Octamethylcyclotetrasilazane
CAS No.	1020-84-4
Molecular Formula	C8H24N4Si4
Molecular Weight	292.67 g/mol
Synonyms	1,1,3,3,5,5,7,7-Octamethylcyclotetrasilazane; OMCTS-N; Cyclotetrasilazane, octamethyl-; 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetrazatetrasilocine; Tetrakis(dimethylsilylamino)silane; N,N'-Bis(dimethylsilyl)-1,3-bis(dimethylsilylamino)-1,3-dimethyl-disilazane
EINECS	213-810-8

Quality Control

Our Octamethylcyclotetrasilazane is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistency for demanding industrial applications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 2°C and 8°C (refrigerated) to minimize volatility and degradation. Due to its hygroscopic and moisture-sensitive nature, containers must be kept sealed under an inert atmosphere (argon or nitrogen) when not in use. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Density (20°C)	0.92 - 0.96 g/cm³
Refractive Index (n20D)	1.440 - 1.445

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