Description

Pyrophyllite is a naturally occurring hydrous aluminum silicate mineral valued for its unique combination of thermal stability, chemical inertness, and low thermal expansion. This makes it a critical functional material in demanding industrial processes where consistent performance under high temperatures is required. It serves as an essential raw material for manufacturers in the ceramics, refractories, paint, and polymer composites industries seeking to enhance product durability and thermal properties.

Application

• Refractory and Foundry Products: As a key component in monolithic refractories, castables, and molding sands due to its high fusion point and volume stability at elevated temperatures.
• Ceramics and Porcelain: Used in the production of ceramic bodies, tiles, and sanitaryware to reduce shrinkage and cracking during firing.
• Filler and Extender: Acts as an inert, low-abrasion filler in paints, coatings, plastics, rubber, and sealants to improve mechanical properties and reduce raw material costs.
• Carrier and Catalyst Support: Employed as a stable, high-surface-area carrier for catalysts and pesticides in chemical and agricultural applications.
• Insulation Materials: Incorporated into fire-resistant boards, panels, and gaskets for its excellent thermal insulation properties.
• Abrasives and Polishing Compounds: Utilized in mild abrasive formulations and polishing powders for metals and glass.

Basic Information

Product Name	Pyrophyllite
CAS No.	113349-11-4
Molecular Formula	Al2Si4O10(OH)2
Molecular Weight	360.31 g/mol
Synonyms	Agalmatolite; Pyrauxite; Mineral White; Keystoneite; Wonderstone; 12279-1; Hydrated Aluminum Silicate; Aluminosilicate mineral
EINECS	Contact for details

Quality Control

Our Pyrophyllite is sourced and processed under strict quality protocols to ensure batch-to-batch consistency. Quality is verified through a series of tests including chemical composition analysis, particle size distribution, and loss on ignition. While we supply various industrial grades, our commitment to rigorous quality testing ensures compliance with relevant industrial specifications. Certificates of Analysis (COA) are available upon request.

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. Separate from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to pale green fine powder
Assay (as Al2O3 + SiO2)	≥ 85.0 %
Aluminum Oxide (Al2O3)	25.0 - 30.0 %
Silicon Dioxide (SiO2)	60.0 - 70.0 %
Loss on Ignition (LOI)	4.0 - 7.0 %
Particle Size (325 mesh residue)	≤ 5.0 %
Moisture Content	≤ 1.5 %

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