Description

Cryolite CAS NO 15096-52-3 is a synthetic inorganic compound primarily composed of sodium, aluminum, and fluoride. It serves as a critical flux in the aluminum smelting industry, significantly lowering the melting point of alumina to enable efficient and energy-saving electrolytic production. This high-purity material is essential for manufacturers in metallurgy, glass, ceramics, and abrasives who require consistent performance and reliable supply chain partners.

Application

• Primary Aluminum Production: Acts as the essential flux (electrolyte) in the Hall-Héroult process to dissolve alumina, enabling efficient electrolysis.
• Abrasive & Grinding Wheel Manufacturing: Used as a filler and bonding agent to enhance the durability and cutting performance of bonded abrasives.
• Glass & Enamel Production: Functions as an opacifier and flux to lower melting temperatures and improve the whiteness and texture of finished products.
• Welding Rod & Flux Coatings: Incorporated into coatings for welding electrodes to stabilize the arc and remove impurities from the weld zone.
• Insecticide & Pesticide Formulations: Utilized as an ingredient in certain agricultural chemicals.
• Ceramics & Refractories: Serves as a flux to promote vitrification and improve the mechanical properties of ceramic bodies.
• Pyrotechnics: Used in some pyrotechnic compositions as a yellow coloring agent for flames.

Basic Information

Product Name	Cryolite
CAS No.	15096-52-3
Molecular Formula	Na3AlF6
Molecular Weight	209.94 g/mol
Synonyms	Sodium Hexafluoroaluminate; Sodium Aluminum Fluoride; Kryolith; Greenland Spar; Ice Stone; Aluminate(3-), hexafluoro-, trisodium; Trisodium hexafluoroaluminate
EINECS	239-148-8

Quality Control

Our Cryolite is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including assay, moisture content, and impurity profile analysis, to meet or exceed typical industrial specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids. The product is hygroscopic (moisture-sensitive) and should be kept in a low-humidity environment at room temperature (15-25°C).

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (as Na3AlF6)	≥ 98.0 %
Moisture (Loss on Drying)	≤ 0.5 %
Silicon Dioxide (SiO2)	≤ 0.4 %
Ferric Oxide (Fe2O3)	≤ 0.1 %
Sulfate (SO4)	≤ 0.5 %
Particle Size (Typical)	Passes through 200 mesh

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