Description

Silica Glass is a high-purity, amorphous form of silicon dioxide (SiO₂) distinguished by its exceptional optical clarity, thermal stability, and chemical inertness. Its primary value lies in providing a robust, transparent material with low thermal expansion and high resistance to thermal shock and most acids. This product is essential for industries requiring precision optics, high-temperature viewing, or chemically resistant transparent components. Key applications span advanced optics, semiconductor manufacturing, laboratory equipment, and specialized lighting.

Application

• Optical Components: Lenses, windows, prisms, and mirrors for UV to IR applications, including lasers and spectroscopy systems.
• Semiconductor Fabrication: Crucibles, furnace tubes, diffusion tubes, and wafer carriers in high-temperature processing.
• Laboratory & Analytical Equipment: Cuvettes, sight glasses, reactor liners, and tubing for corrosive environments.
• Lighting: Envelopes for high-intensity discharge (HID) lamps, UV lamps, and halogen lamps.
• High-Temperature Viewing Ports: Windows for industrial furnaces, kilns, and combustion chambers.
• Precision Instrumentation: Substrates, spacers, and insulating components in sensitive measuring devices.

Basic Information

Product Name	Silica Glass
CAS No.	10279-57-9
Molecular Formula	SiO₂
Molecular Weight	60.08 g/mol
Synonyms	Fused Silica; Fused Quartz; Vitreous Silica; Amorphous Silicon Dioxide; Quartz Glass; Silica Glass Fused; Synthetic Silica Glass; Optical Grade Fused Silica
EINECS	Contact for details

Quality Control

Our Silica Glass is manufactured under controlled conditions to ensure consistent optical and physical properties. Quality is verified through a battery of tests including spectrophotometry for transmission, interferometry for homogeneity, and chemical analysis for purity. Certificates of Analysis (COA) detailing lot-specific characteristics such as OH content, bubble/inclusion levels, and striae are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a dry, clean environment at room temperature (15-25°C). Although chemically stable, the material should be handled with care to prevent surface scratching or contamination. Keep away from strong alkalis and hydrofluoric acid, which can attack the silica network.

Specification

Item	Specification
Appearance	Colorless, transparent solid
Identification (IR)	Conforms to SiO₂
Purity (SiO₂)	> 99.9%
OH Content	< 10 ppm (Low), < 1000 ppm (Standard)
Thermal Expansion Coefficient	~0.55 x 10⁻⁶ /K (0-300°C)
Refractive Index	1.4585 @ 587.6 nm
Transmission Range	~180 nm to 2500 nm
Homogeneity	< 1 x 10⁻⁶

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