Description

Calcium Cryolite is a specialized inorganic fluoride compound with the CAS registry number 39818-95-6. This material is valued in industrial processes for its unique combination of calcium and fluoride ions, offering specific chemical and physical properties not found in simpler salts. It serves as a critical component in metallurgical fluxes, ceramic frits, and specialized glass manufacturing. Industrial buyers and R&D chemists in the aluminum, welding, and abrasives industries rely on its consistent quality for process optimization and product development.

Application

• Metallurgical Flux Agent: Primarily used in aluminum smelting and secondary aluminum production to lower melting points, improve conductivity, and dissolve oxides.
• Welding & Brazing Fluxes: A key ingredient in flux formulations for welding rods and brazing pastes, where it cleans metal surfaces and protects the weld pool.
• Abrasive & Grinding Wheel Manufacturing: Acts as a filler and strengthening agent in resin-bonded grinding wheels and abrasive products.
• Glass & Ceramic Industry: Used as an opacifier and flux in the production of specialty glasses, enamels, and ceramic frits.
• Insecticide & Pesticide Formulations: Serves as an inert carrier or active ingredient component in certain agricultural chemical products.
• Electrode Coating: Incorporated into coatings for arc welding electrodes to stabilize the arc and modify slag characteristics.

Basic Information

Product Name	Calcium Cryolite
CAS No.	39818-95-6
Molecular Formula	Ca3Al2F12 or 3CaF2·Na3AlF6
Molecular Weight	510.16 g/mol (for Ca3Al2F12)
Synonyms	Calcium Hexafluoroaluminate; Tricalcium Dialuminium Dodecafluoride; Calcium Sodium Aluminum Fluoride; Calcium-Aluminum Fluoride; Fluxing Agent CAF; Kryolith, Calcium-; Synthetic Calcium Cryolite
EINECS	Contact for details

Quality Control

Our Calcium Cryolite is manufactured under strict process controls to ensure batch-to-batch consistency and high chemical purity. Quality is verified through a comprehensive suite of analytical tests including X-ray diffraction (XRD) for phase identification and titration for fluoride content. While produced to meet general industrial grade specifications, we can accommodate requests for specific purity levels or particle size distributions. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical parameters is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and must be stored in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture and CO2, which can lead to caking and degradation. Store away from strong acids and strong alkalis.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (XRD)	Complies
Assay (as Ca3Al2F12)	≥ 95.0 %
Fluoride (F) Content	≥ 44.0 %
Calcium (Ca) Content	≥ 23.0 %
Loss on Drying (105°C)	≤ 1.0 %
Particle Size (D50)	10 - 50 µm (customizable)
Heavy Metals (as Pb)	≤ 20 ppm

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