Description

Pyrophyllite is a naturally occurring phyllosilicate mineral valued for its unique combination of thermal stability, chemical inertness, and low thermal expansion. This makes it a critical industrial material for applications requiring high-temperature resistance and dimensional stability. It is essential for manufacturers in the ceramics, refractories, foundry, and paint & coatings industries seeking reliable, high-performance raw materials.

Application

• Refractory Products: A key component in the manufacture of firebricks, kiln furniture, and insulating materials due to its high melting point and resistance to thermal shock.
• Ceramics & Porcelain: Used as a filler and flux in ceramic bodies, tiles, and sanitaryware to improve firing characteristics and final product strength.
• Foundry Mold Coatings: Acts as a parting agent and refractory coating in metal casting to produce smooth surface finishes on castings.
• Paint & Coatings: Functions as an extender and filler to improve durability, weather resistance, and sheen control in industrial paints.
• Plastics & Rubber: Serves as a reinforcing filler to enhance mechanical properties, dimensional stability, and heat resistance in composite materials.
• Insecticide Carriers: Utilized as an inert, absorbent carrier or diluent for agricultural pesticide and herbicide formulations.
• Construction Materials: Incorporated into joint compounds, sealants, and roofing materials for its filler properties and fire resistance.

Basic Information

Product Name	Pyrophyllite
CAS No.	113349-12-5
Molecular Formula	Al2Si4O10(OH)2
Molecular Weight	360.31 g/mol
Synonyms	Agalmatolite; Pyrauxite; Mineral White; Keystoneite; Wonderstone; Pagodite; Pyrophyllite Clay; Pyrophyllite, calcined; Hydrated Aluminum Silicate
EINECS	Contact for details

Quality Control

Our Pyrophyllite is sourced and processed under strict quality protocols to ensure batch-to-batch consistency and performance. We provide comprehensive quality assurance, with product specifications covering chemical composition, particle size distribution, and key physical properties. Certificates of Analysis (COA) are available for all shipments to verify compliance with your technical requirements.

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 away from incompatible materials. The product is not considered hygroscopic under normal storage conditions.

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 (Passing 200 mesh)	≥ 95 %
Moisture Content	≤ 1.5 %
Refractoriness (PCE)	≥ 28

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