Description

Hexaaluminium Pentaoxide Disilicate is an advanced inorganic compound with a complex aluminosilicate structure. This material is valued for its high thermal stability and chemical inertness, making it a critical component in demanding industrial processes. It is primarily utilized in the production of specialized ceramics, high-performance refractories, and as a catalyst support material in the chemical and petrochemical industries.

Application

• Advanced Ceramics & Refractories: A key raw material for manufacturing high-alumina ceramics, insulating bricks, and furnace linings due to its exceptional thermal shock resistance and high melting point.
• Catalyst & Catalyst Support: Used as a stable, high-surface-area support for catalysts in petroleum refining and chemical synthesis processes.
• Glass & Enamel Production: Acts as a flux and stabilizer to modify the thermal expansion and chemical durability of specialty glasses and vitreous enamels.
• Electronic Materials: Employed in the formulation of dielectric ceramics and substrates for electronic components.
• Abrasive & Polishing Compounds: Serves as a high-hardness component in precision grinding and polishing applications.
• Composite Materials: Used as a reinforcing filler in polymer and metal matrix composites to enhance mechanical strength and thermal properties.

Basic Information

Product Name	Hexaaluminium Pentaoxide Disilicate
CAS No.	12068-56-3
Molecular Formula	Al6O13Si2
Molecular Weight	426.09 g/mol
Synonyms	Aluminium Silicate Oxide; Aluminium Oxide Silicate; Alumina Silicate; Mullite (3Al2O3·2SiO2); Aluminium Silicon Oxide; Hexaaluminium Tridecaoxide Disilicate; Al6Si2O13; Kyanite (processed)
EINECS	235-093-2

Quality Control

Our Hexaaluminium Pentaoxide Disilicate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency and compliance with agreed specifications. Key parameters such as chemical composition, phase purity (e.g., mullite content), particle size distribution, and specific surface area are controlled. A Certificate of Analysis (COA) documenting these results is provided with every shipment.

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. Store away from incompatible materials such as strong acids and fluorides.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (XRD)	Complies (Mullite phase)
Assay (as Al6O13Si2)	≥ 98.0 %
Aluminium Oxide (Al2O3) Content	71.0 - 73.0 %
Silicon Dioxide (SiO2) Content	27.0 - 29.0 %
Loss on Ignition (LOI)	≤ 1.0 %
Particle Size (D50)	Contact for details
Specific Surface Area (BET)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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