Description

1,1,1,2,2,3,3-Heptamethyltrisilane is a specialized organosilicon compound characterized by its unique branched heptamethyl structure, serving as a critical precursor in advanced material synthesis. Its value lies in providing a highly reactive silicon source with specific steric and electronic properties, enabling precise control in the deposition of silicon-containing thin films. This chemical is essential for manufacturers and R&D facilities in the semiconductor, photovoltaic, and specialty chemical industries seeking to develop next-generation electronic and optical materials.

Application

• Chemical Vapor Deposition (CVD) & Atomic Layer Deposition (ALD): A key silicon precursor for depositing silicon carbide (SiC), silicon carbonitride (SiCN), or silicon-doped thin films on substrates for semiconductor devices and protective coatings.
• Advanced Semiconductor Fabrication: Used in the production of high-performance logic and memory chips, where it contributes to dielectric layers or diffusion barriers.
• Photovoltaics & Optoelectronics: Employed in the development of thin-film solar cells and light-emitting devices to enhance efficiency and durability.
• Synthesis of Functional Silicones & Polymers: Acts as a building block or cross-linking agent for creating novel silicone-based polymers with tailored thermal and mechanical properties.
• Surface Modification & Nanotechnology: Utilized to functionalize material surfaces or as a molecular scaffold in the bottom-up synthesis of nanomaterials.
• Research & Development: Serves as a valuable reagent in academic and industrial labs for exploring new organosilicon chemistry and material science applications.

Basic Information

Product Name	1,1,1,2,2,3,3-Heptamethyltrisilane
CAS No.	812-28-2
Molecular Formula	C7H22Si3
Molecular Weight	190.51 g/mol
Synonyms	Trisilane, 1,1,1,2,2,3,3-heptamethyl-; Heptamethyltrisilane; Tris(trimethylsilyl)methane? (Note: Verify structure); HMTS; 1,1,1,2,2,3,3-Heptamethyl-trisilan; (Dimethylsilyl)bis(trimethylsilane) (structural isomer); Contact for complete synonym list.
EINECS	Contact for details

Quality Control

Our 1,1,1,2,2,3,3-Heptamethyltrisilane is produced and handled under stringent quality management systems to ensure batch-to-batch consistency and high purity, critical for sensitive deposition processes. Product quality is verified through advanced analytical techniques including Gas Chromatography (GC) and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each 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 place. Due to its highly volatile and hygroscopic (moisture-sensitive) nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) at temperatures between 2°C and 8°C for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~0.78 g/mL
Boiling Point	~150-155°C

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