Description

Tetrachlorosilane is a key inorganic chemical intermediate, also known as silicon tetrachloride. This highly reactive compound is essential for the production of high-purity silicon and silica-based materials, serving as a fundamental building block in advanced manufacturing. It is critical for industries requiring ultra-pure silicon deposition, including semiconductor fabrication, optical fiber production, and the synthesis of specialty silica gels and fumed silica.

Application

• Semiconductor Manufacturing: As a primary precursor for chemical vapor deposition (CVD) to produce high-purity polycrystalline silicon and epitaxial silicon layers.
• Optical Fiber Production: Used in the modified chemical vapor deposition (MCVD) process to manufacture the core and cladding layers of telecommunications-grade optical fibers.
• Fumed Silica Synthesis: A crucial raw material for the flame hydrolysis process to produce pyrogenic (fumed) silica, used as a rheology modifier and reinforcing agent.
• Specialty Silicones & Silicates: Acts as an intermediate in the synthesis of various silicon esters, silica gels, and other silicate-based materials.
• Surface Treatment: Employed to create thin, adherent silicon dioxide coatings on various substrates for improved durability and performance.
• Laboratory & Research: Serves as a versatile reagent in synthetic chemistry for introducing silicon into organic and inorganic molecules.

Basic Information

Product Name	Tetrachlorosilane
CAS No.	10026-04-7
Molecular Formula	SiCl4
Molecular Weight	169.90 g/mol
Synonyms	Silicon tetrachloride; Silicon(IV) chloride; Tetrachlorosilane; Perchlorosilane; STC; Silicon chloride
EINECS	233-054-0

Quality Control

Our Tetrachlorosilane is manufactured under stringent process controls to ensure high purity and batch-to-batch consistency, meeting the exacting requirements of the electronics and specialty chemical industries. Quality is verified through comprehensive analytical testing, including gas chromatography (GC) and spectroscopic methods. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, ignition sources, and incompatible materials such as water, strong bases, and alcohols. Due to its highly volatile and moisture-sensitive nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent hydrolysis and pressure build-up. Handle and open containers with appropriate precautions to avoid exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.9%
Iron (Fe)	≤ 1 ppm
Aluminum (Al)	≤ 1 ppm
Boron (B)	≤ 0.1 ppm
Phosphorus (P)	≤ 0.1 ppm
Residue after evaporation	≤ 10 ppm

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