Description

Orthoclase is a potassium aluminum silicate mineral belonging to the feldspar group, a fundamental rock-forming mineral with the CAS Registry Number 12251-44-4. It is valued for its unique combination of chemical stability, alumina content, and fluxing properties, making it a critical raw material in several industrial processes. This product is essential for manufacturers in the ceramics, glass, and construction industries, as well as for specialized applications in abrasives and fillers.

Application

• Ceramics and Porcelain: Acts as a key fluxing agent to lower the melting temperature and vitrification point, improving the strength and durability of the final product.
• Glass Manufacturing: Serves as a source of alumina (Al2O3) and potassium oxide (K2O), enhancing the chemical resistance, thermal stability, and brilliance of glass.
• Construction Materials: Used as a filler and extender in paints, coatings, and plastics to improve weatherability and mechanical properties.
• Abrasive Products: Incorporated into grinding wheels and polishing compounds due to its moderate hardness.
• Geopolymer and Cement: A potential aluminosilicate source for the synthesis of eco-friendly geopolymer binders.
• Potassium Fertilizer: A slow-release source of potassium for agricultural applications after processing.
• Welding Electrode Coatings: Utilized for its slag-forming and arc-stabilizing properties.

Basic Information

Product Name	Orthoclase
CAS No.	12251-44-4
Molecular Formula	KAlSi3O8
Molecular Weight	278.33 g/mol
Synonyms	Potassium Feldspar; K-Feldspar; Potash Feldspar; Sanidine; Adularia; Alkali Feldspar; Orthose; KAlSi3O8
EINECS	235-494-3

Quality Control

Our Orthoclase is sourced and processed to meet stringent quality parameters for industrial applications. We employ advanced analytical techniques to ensure batch-to-batch consistency in chemical composition and physical properties. A comprehensive Certificate of Analysis (COA) detailing purity, mineralogy, and particle size distribution is provided with every shipment to guarantee compliance with your specifications.

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 away from incompatible materials such as strong acids. The product is not hygroscopic under normal conditions but should be protected from prolonged exposure to excessive moisture to prevent caking.

Specification

Item	Specification
Appearance	White to pink powder or granules
Assay (as KAlSi3O8)	Min. 95%
SiO2 Content	64 - 66 %
Al2O3 Content	18 - 20 %
K2O Content	10 - 12 %
Fe2O3 Content	Max. 0.1 %
Particle Size (D50)	Contact for details
Loss on Ignition (LOI)	Max. 0.5 %

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