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 filler and raw material in demanding industrial applications where consistent performance under high temperatures is required. Key industries that rely on this material include ceramics, refractories, paints & coatings, and polymer composites.

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 sanitaryware, tiles, and electrical insulators to reduce shrinkage and thermal expansion during firing.
• Paints, Coatings, and Sealants: Acts as an extender and functional filler to improve durability, weather resistance, and reduce gloss.
• Plastics and Rubber Compounds: Serves as a reinforcing filler to enhance dimensional stability, heat resistance, and electrical properties.
• Insecticide and Pesticide Carriers: Utilized as an inert, absorbent carrier material for agricultural formulations.
• Construction Materials: Incorporated into joint compounds, roofing materials, and fire-resistant boards.

Basic Information

Product Name	Pyrophyllite
CAS No.	113349-10-3
Molecular Formula	Al2Si4O10(OH)2
Molecular Weight	360.31 g/mol
Synonyms	Aluminum silicate hydroxide; Pyrauxite; Agalmatolite; Pagodite; Wonderstone; Pyrophyllite (Al2(OH)2Si4O10); Hydrated aluminum silicate
EINECS	Contact for details

Quality Control

Our Pyrophyllite is sourced and processed under a rigorous quality management system to ensure batch-to-batch consistency for industrial applications. Key parameters such as chemical composition, particle size distribution, and loss on ignition are strictly monitored. A Certificate of Analysis (COA) detailing the specific lot specifications is provided with every shipment.

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 away from incompatible materials. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent caking.

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 (D50)	5 - 45 µm (customizable)
Moisture Content	≤ 1.5 %

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