Description

Coesite CAS NO 13778-38-6 is a high-pressure polymorph of silicon dioxide (SiO₂), distinguished by its unique crystal structure formed under extreme geological conditions. This material is of significant industrial and scientific interest due to its exceptional hardness and stability, offering superior performance in specialized applications where standard quartz or cristobalite may not suffice. It is primarily utilized in advanced material science research, high-pressure experimental studies, and as a critical component in the synthesis of novel ceramics and composites.

Application

• High-Pressure Material Research: Serves as a standard or subject in studies simulating deep-Earth conditions and shock metamorphism.
• Advanced Ceramics & Composites: Used as a reinforcing agent or precursor to develop materials with enhanced thermal stability and mechanical strength.
• Geological & Planetary Science: Acts as an indicator mineral for ultra-high-pressure metamorphic events in geology and meteoritics.
• Industrial Abrasives: Potential application in specialized abrasive formulations requiring high hardness and chemical inertness.
• Optical Material Development: Investigated for use in specialized optical components due to its unique structural properties.
• Catalyst Support Systems: Explored as a stable, high-surface-area support material for catalysts in demanding chemical processes.

Basic Information

Product Name	Coesite
CAS No.	13778-38-6
Molecular Formula	SiO₂
Molecular Weight	60.08 g/mol
Synonyms	Coesite; Silicon Dioxide (coesite form); High-pressure silica; Silica, dioxo- (coesite); Coesite (SiO₂); High-quartz; Dioxosilane (coesite)
EINECS	Contact for details

Quality Control

Our Coesite is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and purity for research and industrial applications. Each lot is characterized using advanced analytical techniques such as X-ray diffraction (XRD) and spectroscopy to confirm its phase identity and chemical composition. A Certificate of Analysis (COA) detailing specific parameters is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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 the container tightly sealed to minimize exposure to atmospheric moisture and contaminants.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (XRD)	Conforms to coesite reference pattern
Assay (SiO₂)	≥ 99.0%
Crystalline Phase Purity	≥ 98% (by XRD)
Particle Size (D50)	Customizable (e.g., 1-10 µm)
Loss on Drying	≤ 0.5%

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