Description

Silicon CAS NO 7440-21-3 is a high-purity metalloid element, essential as the foundational material for modern electronics and advanced industrial processes. Its unique semiconducting properties make it critical for manufacturing integrated circuits, solar cells, and a vast array of electronic components. This product is indispensable for industries including semiconductor fabrication, photovoltaics, metallurgy for alloy production, and the synthesis of silicone polymers and silanes.

Application

• Semiconductor Manufacturing: Primary substrate material for the production of silicon wafers used in integrated circuits (ICs), microchips, and transistors.
• Photovoltaic (PV) Industry: Key raw material in the manufacture of monocrystalline and polycrystalline silicon solar cells for renewable energy generation.
• Metallurgy & Alloy Production: Used as a deoxidizing and strengthening agent in aluminum, steel, and copper alloys to enhance specific properties.
• Silicone & Silane Synthesis: Fundamental starting material for producing silicone oils, rubbers, resins, and various organosilicon compounds.
• Chemical Manufacturing: Employed in the production of silicon tetrachloride, silanes, and fumed silica for diverse chemical applications.
• Refractories & Ceramics: Used in the formulation of high-temperature materials, including silicon carbide and advanced ceramics.

Basic Information

Item	Details
Product Name	Silicon
CAS No.	7440-21-3
Molecular Formula	Si
Molecular Weight	28.0855 g/mol
Synonyms	Silicon metal; Crystalline Silicon; Polycrystalline Silicon; Metallurgical Grade Silicon; Solar Grade Silicon; Electronic Grade Silicon; Si powder; Silicon lumps
EINECS	231-130-8

Quality Control

Our Silicon is produced and tested under stringent quality management protocols to ensure batch-to-batch consistency and compliance with industry-specific requirements. We offer various grades, including Metallurgical, Solar, and Electronic grades, each with tailored purity specifications. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profiles, and physical characteristics is provided with every shipment to guarantee traceability and performance.

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). Keep away from strong acids, strong alkalis, and halogens. For fine powder grades, store under an inert atmosphere such as argon or nitrogen to minimize surface oxidation.

Specification

Item	Specification
Appearance	Dark gray, metallic lumps or powder
Assay (Si, by difference)	≥ 98.0% - 99.9999% (Grade Dependent)
Iron (Fe)	< 0.5%
Aluminum (Al)	< 0.5%
Calcium (Ca)	< 0.1%
Particle Size (for powder grades)	Customizable (e.g., -100 mesh, -325 mesh)

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