Description

Tridymite is a high-purity crystalline polymorph of silicon dioxide (SiO₂), distinct from quartz and cristobalite. This material is valued for its unique thermal stability and specific structural properties, making it a critical component in advanced refractory and ceramic formulations. It is essential for manufacturers in the foundry, construction materials, and high-temperature insulation industries seeking to enhance product performance and durability.

Application

• Refractory Materials: A key ingredient in high-temperature linings for furnaces, kilns, and reactors due to its thermal shock resistance and stability.
• Investment Casting: Used in ceramic shell systems for precision metal casting to create molds with excellent dimensional accuracy and surface finish.
• Specialty Ceramics & Composites: Incorporated into technical ceramics to modify thermal expansion characteristics and improve mechanical strength.
• Construction Materials: An additive in certain cement and concrete formulations to influence setting properties and final product durability.
• Catalyst Support: Serves as a stable, high-surface-area carrier material in various catalytic processes within the chemical industry.
• Glass & Enamel Production: Utilized as a silica source to control viscosity and thermal properties during manufacturing.
• Research & Development: Employed as a standard reference material in geological, materials science, and crystallography studies.
• Abrasive & Polishing Compounds: Used in fine-grit formulations for precision surface finishing applications.

Basic Information

Product Name	Tridymite
CAS No.	15468-32-3
Molecular Formula	SiO₂
Molecular Weight	60.08 g/mol
Synonyms	Tridymite; Silicon Dioxide (Tridymite form); Tridymite Silica; Tridymite (SiO₂); α-Tridymite; β-Tridymite; High-Tridymite; Low-Tridymite; Silica, Tridymite
EINECS	239-487-1

Quality Control

Our Tridymite is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and compliance with industrial specifications. Quality parameters, including crystalline phase purity (by XRD), chemical assay (SiO₂ content), and key physical properties, are rigorously verified. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee product integrity for your application.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed to minimize exposure to atmospheric moisture and contaminants. Separate from strong acids and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (XRD)	Conforms to Tridymite pattern
Assay (as SiO₂)	≥ 99.0 %
Crystalline Phase Purity	≥ 98 % (by XRD)
Loss on Drying (LOD)	≤ 0.5 %
Particle Size (D50)	Customizable (e.g., 5-50 µm)
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 100 ppm

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