CAS 7789-75-5 identifies calcium fluoride (CaF2), an inorganic compound used in several industrial roles, including as a flux in metallurgical processes, a raw material for hydrofluoric acid, an ingredient in some glass and ceramic formulations, and a material for optical components. Its suitability depends on the application: buyers need to consider purity, particle size, impurities, and the process conditions in which the material will be used. At Azeal Materials, we help B2B buyers clarify those requirements before requesting a quotation or sample information.
Calcium fluoride is also known as fluorspar in its naturally occurring mineral form. Although the same chemical formula appears across these uses, material grade and production route can affect performance and suitability. A specification selected for a chemical process, for example, may not meet the optical or ceramic requirements of another application.
Calcium fluoride is a white or colorless crystalline solid composed of calcium and fluoride ions. Its formula is CaF2, and its CAS Registry Number is 7789-75-5. Naturally occurring fluorspar can contain mineral impurities, while processed or synthetic material may be supplied to a more defined chemical or physical specification.
Several basic properties help explain its industrial value. Calcium fluoride has a melting point of approximately 1,418°C and a density of about 3.18 g/cm3; its Mohs hardness is approximately 4. These reference values describe the compound, not a guaranteed specification for every commercial product, so buyers should verify the data sheet for the material being offered.
In metallurgical operations, fluorspar may be used as a flux or slag-conditioning additive. Depending on the process and formulation, it can help influence slag behavior and support processing at high temperatures. The required amount and effect depend on the furnace practice, other charge materials, and the composition of the slag, so calcium fluoride should be assessed within the full process rather than as a stand-alone solution.
Calcium fluoride is an important mineral feedstock for producing hydrofluoric acid through reaction with sulfuric acid. Hydrofluoric acid is then used as a starting material in multiple fluoride-chemistry chains. For this application, buyers typically focus on chemical composition, impurity limits, moisture, and particle size because these can affect conversion, handling, and process control.
Some glass and ceramic manufacturers use calcium fluoride as a formulation ingredient, including in compositions where it contributes to melting behavior, appearance, or optical characteristics. Its role is recipe-specific: the result depends on the other raw materials and the firing or melting conditions. Buyers should define the intended function and test the material in their formulation instead of assuming that one grade will perform identically across products.
High-purity calcium fluoride is used to manufacture optical components for applications that require transmission across selected ultraviolet, visible, or infrared wavelengths. Optical-grade material is not interchangeable with standard industrial fluorspar because optical performance depends on factors such as purity, crystal quality, inclusions, and finishing. Buyers should specify the operating wavelength range and component requirements when sourcing material for optical use.
These uses do not imply that every calcium fluoride product is suitable for every sector. Industrial-grade material may be appropriate for bulk processing but fail to meet tighter requirements for optical quality or specific chemical production. The application and required grade should therefore be confirmed before purchase.
Natural fluorspar is mined and processed from mineral deposits. Its composition and physical characteristics can vary with the source and beneficiation method, so buyers should review the supplier’s current analysis and any stated tolerances. This option is often considered for bulk industrial uses where the agreed composition and contaminant levels meet process requirements.
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Processed or synthetic calcium fluoride may be manufactured to a more controlled composition or particle profile, depending on the producer and product specification. It may be considered when buyers need tighter control than a particular natural material can provide. The label alone does not establish suitability: request the detailed specification and confirm the parameters that matter to your process.
Optical applications require a separate evaluation from general industrial purchasing. In addition to chemical purity, buyers may need information about crystal quality, transmission, dimensions, and finishing options. These requirements should be agreed with the supplier and component manufacturer before committing to a material grade.
A useful calcium fluoride specification links measurable properties to the end use. Rather than comparing suppliers on a single headline purity figure, we recommend confirming the complete set of parameters that could affect processing, product quality, or regulatory handling.
| Specification area | Why it matters |
|---|---|
| CaF2 content and chemical analysis | Confirms the principal compound level and helps identify relevant impurities. |
| Particle size or size distribution | Can affect feeding, blending, dissolution, reaction, or furnace handling. |
| Moisture and physical condition | Supports consistent storage, transport, and process use. |
| Trace impurities | Important where contaminants could affect chemical conversion, glass quality, or optical performance. |
| Packaging and documentation | Helps align delivery, identification, and incoming quality checks with purchasing procedures. |
Define what the material must do before comparing offers. For example, a metallurgical buyer may prioritize consistent feed behavior and compatible chemistry, while a chemical producer may emphasize CaF2 content and impurity limits. An optical buyer should identify the wavelength range and component requirements rather than requesting a general industrial grade.
Ask for a current technical data sheet and, where applicable, a batch-specific certificate of analysis. Confirm the test methods, acceptable tolerances, packaging, order quantity, and expected delivery schedule. If a specification is critical, agree on how it will be verified and documented before placing an order.
Where the material is new to a process, a controlled trial can help determine whether it meets operational and finished-product requirements. The trial should use the actual formulation or process conditions as far as practical. For optical or other highly sensitive applications, technical review by the component manufacturer may also be needed.
At Azeal Materials, we work with B2B buyers to define the calcium fluoride grade and documentation needed for a specific use. We can review your target composition, particle-size range, impurity limits, packaging preference, and destination requirements to help clarify the sourcing scope. Product availability, customization, and lead time should be confirmed for each inquiry rather than assumed from a general product description.
To make an inquiry actionable, share the intended application, required specification, estimated quantity, packaging needs, and delivery destination. If your process has a critical impurity or particle-size limit, state it explicitly so it can be addressed during product evaluation. We can then discuss the appropriate material option and provide the information available for the requested grade.
CAS 7789-75-5 is calcium fluoride, an industrial compound used as a metallurgical flux, a feedstock for hydrofluoric acid production, an ingredient in selected glass and ceramic formulations, and a material for optical components. Its suitability depends on grade and application, with purity, impurities, particle size, and physical quality among the key purchasing considerations. The compound’s reference melting point of approximately 1,418°C and density of about 3.18 g/cm3 provide context, but they do not replace a product-specific specification.
To decide whether calcium fluoride is right for your process, first define its required function and acceptance criteria, then compare supplier documentation against those requirements. For sourcing support, contact Azeal Materials with your application, target specification, quantity, and destination so we can discuss a suitable supply option.
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