Description

Aluminum Silicate CAS NO 1327-36-2 is a versatile inorganic compound widely utilized as a functional filler and additive. Its value lies in its ability to enhance mechanical properties, improve thermal stability, and provide cost-effective bulking in various formulations. This product is essential for manufacturers in the paints & coatings, plastics, rubber, ceramics, and construction industries seeking to optimize product performance and production efficiency.

Application

• As a reinforcing and extending filler in rubber and plastic compounds to improve hardness and dimensional stability.
• As an opacifying agent and flatting agent in industrial paints, coatings, and primers.
• As a key raw material in the production of ceramic bodies, glazes, and refractories.
• As a functional additive in adhesives, sealants, and caulks to modify viscosity and sag resistance.
• In paper manufacturing as a filler to improve brightness, opacity, and printability.
• In the construction industry as a component in cement, concrete, and fireproofing materials.
• As an anti-caking and free-flow agent in various powdered industrial products.

Basic Information

Product Name	Aluminum Silicate
CAS No.	1327-36-2
Molecular Formula	Al2O9Si3 (commonly represented as Al2SiO5 or variable)
Molecular Weight	282.21 g/mol (for Al2SiO5)
Synonyms	Aluminium Silicate; Kaolin (refined); China Clay; Porcelain Clay; Hydrated Aluminum Silicate; Aluminum Silicate Hydrate; Anhydrous Aluminum Silicate; E554
EINECS	215-475-1

Quality Control

Our Aluminum Silicate is produced under a stringent quality management system. Each batch undergoes rigorous testing for key parameters including chemical composition, particle size distribution, and impurity levels to ensure consistent performance and reliable supply. Certificates of Analysis (COA) documenting these results 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, well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to minimize moisture absorption from the atmosphere.

Specification

Item	Specification
Appearance	White to off-white fine powder
Identification (IR)	Conforms
Assay (as Al2O3)	≥ 35.0 %
Assay (as SiO2)	≥ 45.0 %
Loss on Drying (LOD)	≤ 2.0 %
Loss on Ignition (LOI)	≤ 15.0 %
Particle Size (D50)	1.0 - 10.0 µm
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.