Description

Topaz CAS NO 1302-59-6 is a high-purity, naturally occurring aluminum silicate hydroxide mineral, prized for its unique physical and chemical stability. This material is essential for industrial applications requiring a durable, inert, and consistent mineral component. It is primarily utilized in the manufacturing of high-performance ceramics, specialized glass, and as a functional filler in coatings and polymers.

Application

• Ceramics & Refractories: A key raw material in the production of technical ceramics, porcelain, and high-temperature refractory linings due to its thermal stability and low thermal expansion.
• Glass Manufacturing: Used as a flux and stabilizer in the production of specialty glass, including optical and laboratory glassware, to enhance chemical resistance and durability.
• Paints & Coatings: Acts as a functional extender and filler to improve hardness, weather resistance, and corrosion protection in industrial and marine coatings.
• Polymer Composites: Incorporated into plastics, rubber, and composites to enhance mechanical strength, dimensional stability, and heat resistance.
• Foundry & Casting: Employed in mold and core sands for metal casting to improve surface finish and dimensional accuracy of cast parts.
• Abrasives & Polishing: Used in the formulation of grinding wheels, sandpapers, and polishing compounds for metal and stone finishing.

Basic Information

Product Name	Topaz CAS NO 1302-59-6
CAS No.	1302-59-6
Molecular Formula	Al2SiO4(F,OH)2
Molecular Weight	182.25 g/mol (for Al2SiO4F2)
Synonyms	Topaz Mineral; Aluminum Silicate Fluoride Hydroxide; Precious Topaz; Silicic Acid, Aluminum Salt; Aluminium Fluoro Silicate; Al2(F,OH)2SiO4; Gemstone Topaz; Fluorine-bearing Aluminum Silicate
EINECS	Contact for details

Quality Control

Our Topaz products are sourced and processed under strict quality protocols to ensure batch-to-batch consistency and meet the stringent requirements of industrial applications. Quality is verified through a series of analytical tests including X-ray diffraction (XRD) for phase identification, particle size distribution (PSD) analysis, and chemical composition assays. Certificates of Analysis (COA) detailing purity, major element content (Al, Si, F), and impurity levels are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep the container sealed to prevent moisture absorption and contamination from dust or other particulates. Separate from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder
Identification (XRD)	Complies with standard pattern for Topaz
Assay (as Al2O3)	≥ 55.0 %
SiO2 Content	≥ 30.0 %
Fluoride (F) Content	12.0 - 20.0 %
Loss on Ignition (LOI)	≤ 2.0 %
Particle Size (D50)	Customizable (e.g., 5-45 µm)
Heavy Metals (as Pb)	≤ 20 ppm

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