Description

Aluminum Silicate CAS NO 139264-88-3 is a versatile inorganic compound widely utilized as a functional additive and filler across numerous industries. Its primary value lies in its ability to enhance material properties such as thermal stability, mechanical strength, and chemical inertness. This product is essential for manufacturers in sectors including ceramics, paints and coatings, plastics, and construction materials seeking to improve product performance and durability.

Application

• Ceramics and Refractories: Acts as a key component in the formulation of ceramic bodies, glazes, and high-temperature refractory bricks, contributing to thermal shock resistance and structural integrity.
• Paints, Coatings, and Inks: Serves as an extender pigment and flatting agent to improve suspension, durability, and sheen control in various coating systems.
• Plastics and Polymer Composites: Functions as a reinforcing filler to enhance dimensional stability, heat resistance, and surface finish in compounded polymers.
• Construction Materials: Used in cement, concrete, and grouts to modify setting times and improve overall strength and durability.
• Adhesives and Sealants: Imparts thixotropy and improves the mechanical properties and weather resistance of formulated products.
• Catalyst and Catalyst Support: Employed as a porous support material in various catalytic processes due to its high surface area and stability.
• Paper and Rubber Industries: Utilized as a filler and coating pigment to enhance opacity, smoothness, and reinforcement.

Basic Information

Product Name	Aluminum Silicate
CAS No.	139264-88-3
Molecular Formula	Al2O9Si3 (Typical representation for kaolin-type structures; exact formula may vary)
Molecular Weight	282.21 g/mol (Approx., based on Al2Si2O7)
Synonyms	Aluminium Silicate; Kaolin; China Clay; Hydrated Aluminum Silicate; Aluminum Silicate Hydrate; Porcelain Clay; Anhydrous Aluminum Silicate; Aluminosilicic Acid
EINECS	Contact for details

Quality Control

Our Aluminum Silicate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive testing of key parameters including chemical composition, particle size distribution, brightness, and moisture content. Certificates of Analysis (COA) documenting these results are provided with each shipment and are available upon request to support your quality assurance protocols.

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 when not in use to minimize exposure to atmospheric moisture. Separate from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (Al2O3 + SiO2)	≥ 95.0 %
Loss on Drying	≤ 2.0 %
Particle Size (D50)	1.0 - 10.0 µm (Grade dependent)
pH (10% slurry)	4.5 - 7.5
Heavy Metals (as Pb)	≤ 20 ppm

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