Description

Trichlorosilane is a highly reactive, volatile inorganic compound that serves as a critical intermediate in modern industrial chemistry. Its primary value lies in its role as the essential precursor for the production of high-purity silicon, the foundational material for semiconductors and solar panels. This makes it indispensable for manufacturers in the electronics, photovoltaic, and advanced materials sectors seeking reliable, high-quality raw materials for silicon-based products.

Application

• Semiconductor Manufacturing: As the principal starting material in the Siemens process for producing hyper-pure polycrystalline silicon, which is used to fabricate silicon wafers for integrated circuits and microchips.
• Photovoltaic (Solar) Industry: A key feedstock for the production of solar-grade silicon, forming the basis of crystalline silicon solar cells and panels.
• Silicone Production: Used as an intermediate in the synthesis of various organosilicon compounds and silicone polymers, including resins, rubbers, and oils.
• Surface Treatment: Employed in chemical vapor deposition (CVD) processes to deposit silicon-containing coatings on surfaces for enhanced hardness, corrosion resistance, or specific optical properties.
• Chemical Synthesis: Serves as a versatile chlorosilane reagent in organic and inorganic synthesis for introducing silicon-chloride functional groups.
• Fumed Silica Production: Used in the flame hydrolysis process to manufacture high-surface-area fumed silica, a critical reinforcing agent and rheology modifier.

Basic Information

Product Name	Trichlorosilane
CAS No.	10025-78-2
Molecular Formula	Cl3HSi
Molecular Weight	135.45 g/mol
Synonyms	Silicon Chlorohydride; Trichloromonosilane; Silane, Trichloro-; TCS; HSiCl3; Monochlorosilane; Trichlorosilicane
EINECS	233-042-5

Quality Control

Our Trichlorosilane is produced and handled under stringent quality management protocols to ensure batch-to-batch consistency and high purity, which is critical for downstream electronic and solar applications. Quality is verified through advanced analytical techniques including gas chromatography (GC) and spectroscopic methods. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profiles, and physical properties is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile and easily oxidized nature, this product must be stored under an inert atmosphere (e.g., nitrogen or argon) in a cool, well-ventilated area, away from heat, ignition sources, and incompatible materials such as strong bases, oxidizers, and water. Recommended storage temperature is 2-8°C to minimize volatility and degradation. Containers must be kept tightly sealed and upright to prevent moisture ingress and pressure buildup.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.5%
Dichlorosilane (GC)	≤ 0.1%
Tetrachlorosilane (GC)	≤ 0.3%
Chloride (as HCl)	≤ 50 ppm
Metals (ICP-MS)	≤ 1 ppm total
Density at 25°C	1.34 - 1.36 g/mL
Boiling Point	31.8°C

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