CAS:7784-18-1 Aluminum Fluoride: Uses, Specifications, and Buying Guide

CAS 7784-18-1 identifies aluminum fluoride, an inorganic fluoride with the chemical formula AlF₃ and a molecular weight of 83.98 g/mol. I commonly see this material evaluated for aluminum smelting, ceramic and glass formulations, and selected industrial chemical applications where fluoride content and thermal stability are important. For B2B purchasing, the most important checks are chemical identity, assay, moisture, particle-size distribution, packaging, documentation, and the supplier’s ability to maintain consistent batches.

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Aluminum fluoride is generally supplied as a white crystalline powder or granular solid. It has low solubility in water compared with many common inorganic fluorides, so handling, dispersion, and process compatibility should be reviewed before approval. The correct purchasing decision depends less on the CAS number alone and more on the application-specific specification agreed between the buyer and supplier.

Who This Guide Is For

I prepared this guide for procurement teams, process engineers, quality managers, distributors, and manufacturers sourcing CAS 7784-18-1 aluminum fluoride. It is especially relevant to buyers who need to compare multiple suppliers, qualify an alternative source, or convert a technical requirement into a clear request for quotation. It can also help purchasing teams identify which questions must be answered before placing a trial or production order.

This guide is not a substitute for a product specification, safety data sheet, regulatory review, or application trial. Aluminum fluoride requirements can vary by plant, process, region, and end-use formulation. I therefore recommend treating the values below as purchasing guidance rather than as a universal specification for every grade.

Basic Concept and Industrial Function

Aluminum fluoride consists of aluminum and fluoride ions in an inorganic compound. In aluminum production, it is used as a fluoride-containing bath additive to help control the chemistry and operating behavior of the molten electrolyte. Its practical value is connected to the ability to influence bath composition, liquidus behavior, and the balance of fluoride components in the smelting process.

Outside primary aluminum production, aluminum fluoride may be considered for certain ceramic, glass, metallurgical, and chemical applications. The suitability of the material depends on factors such as purity, trace metals, moisture, particle size, and the customer’s process temperature. I advise buyers to confirm the intended use with their technical team before comparing quotations solely on price.

Types, Forms, and Specification Options

Anhydrous Aluminum Fluoride

Anhydrous aluminum fluoride is the form most buyers associate with CAS 7784-18-1. It is normally supplied as a dry powder or solid material, and buyers should confirm that the offered product is not a hydrate, blended fluoride, or material identified under a different CAS number. The certificate of analysis should show the product name, CAS number, formula, batch number, manufacturing date, and test results.

Powder and Granular Forms

Powder can provide faster mixing or reaction in some processes, while granular material may reduce dust during charging and transfer. The preferred form depends on the feeding system, storage conditions, and required dissolution or dispersion behavior. I recommend requesting particle-size data, including a defined measurement method and, where relevant, a D50 or sieve distribution expressed in micrometers.

Application-Specific Grades

Some buyers require a general industrial grade, while others need tighter controls on iron, silicon, sodium, calcium, moisture, or insoluble matter. These requirements should be written into the technical purchase specification rather than left as informal expectations. A supplier may be able to discuss custom screening, particle-size control, packaging, or documentation, but these options should be confirmed before order placement.

Key Specifications to Review

A reliable evaluation begins with a complete specification rather than a single purity number. For CAS 7784-18-1 aluminum fluoride, I suggest reviewing the following parameters with the supplier:

As a reference point, the molecular weight of AlF₃ is 83.98 g/mol. A buyer may use an internal acceptance target such as 99.0 wt% assay for a high-purity application, but this is an example of a purchasing criterion, not a universal grade requirement. Likewise, 25 kg bags may be practical for laboratory or smaller industrial orders, while larger projects may require bulk or palletized packaging; the available format should be confirmed with the supplier.

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How to Match Aluminum Fluoride to the Application

Aluminum Smelting

For aluminum smelting, the key issue is whether the material supports the plant’s required bath chemistry and feeding operation. Buyers should focus on fluoride content, moisture, insoluble matter, trace metals, particle size, and consistency between lots. The plant’s process engineer should also confirm whether powder or granules are better suited to the existing charging equipment.

Ceramics and Glass

In ceramic or glass applications, trace impurities and batch-to-batch consistency may be more important than the lowest available price. The buyer should evaluate how aluminum fluoride interacts with the complete formulation, firing schedule, and atmosphere. A controlled trial using a representative production batch is more informative than relying only on a generic technical data sheet.

Other Industrial Uses

For other chemical or metallurgical uses, I recommend defining the function of aluminum fluoride first: fluoride donor, process modifier, additive, or reactant. This definition helps determine the appropriate assay, particle size, moisture limit, and impurity profile. If the material will be used in a regulated or safety-sensitive process, the buyer should also review local requirements and the supplier’s SDS before qualification.

Buyer Selection Framework

1. Define the application: State the process, expected consumption, feeding method, and required physical form.
2. Write the specification: Include identity, assay, moisture, impurity limits, particle size, packaging, and test methods.
3. Request documentation: Ask for the SDS, technical data sheet, representative COA, packaging information, and origin details.
4. Compare samples: Test representative material under relevant process conditions rather than judging appearance alone.
5. Confirm commercial terms: Review MOQ, lead time, Incoterms, payment terms, shipment documents, and replacement procedures.
6. Approve the supply route: Establish how each production batch will be identified, tested, packed, and released.

One important decision point is the difference between a nominal specification and a guaranteed specification. A supplier may describe a product as “high purity,” but a buyer should request the actual numerical limit and the test method used. I also recommend confirming whether the COA is issued for every batch or provided only as a typical value.

Pricing, MOQ, and Lead Time Considerations

The price of aluminum fluoride can vary with assay, impurity controls, particle-size requirements, packaging, order volume, freight route, and market conditions. A lower quoted price may not represent a lower total cost if the material requires repacking, additional testing, or process adjustment. For an accurate comparison, I suggest requesting quotations against the same specification and delivery term.

MOQ and lead time should be discussed early, particularly for customized particle sizes or export orders. Standard grades may be easier to schedule than specially controlled grades, but availability depends on the supplier’s production plan and inventory position. Buyers should ask whether the quoted lead time includes manufacturing, quality release, packing, export documentation, and transportation booking.

Supplier Evaluation Checklist

When evaluating a supplier, I look for clear technical communication and evidence of controlled commercial execution. The supplier should be able to identify CAS 7784-18-1 correctly, provide consistent documentation, explain available forms, and state which parameters are routinely tested. It is also useful to ask how nonconforming material, damaged packaging, retained samples, and complaint investigations are handled.

• Can the supplier provide a current SDS and technical data sheet?
• Does the COA include batch-specific results rather than only typical values?
• Can the supplier meet the required assay, moisture, impurity, and particle-size limits?
• Are packaging materials suitable for long-distance transportation and dry storage?
• Can the supplier support a sample, trial order, and repeat production supply?
• Are export documents and shipment terms clearly defined?

How Azeal Materials Can Support Your Sourcing

At Azeal Materials, I approach CAS 7784-18-1 aluminum fluoride sourcing as a specification-matching project rather than a simple product transaction. We can discuss the intended application, required form, assay target, impurity limits, particle-size expectations, packaging, and delivery destination before preparing a quotation. This helps buyers compare technically equivalent offers and identify requirements that may affect cost or lead time.

For an initial inquiry, please provide the required quantity, destination country, target specification, preferred packaging, and whether you need a sample or batch-specific documentation. If your specification is still under development, sharing the application and process conditions will help us recommend the most relevant information to review. Final acceptance should always be based on the agreed specification, documentation, and the buyer’s own technical qualification process.

Key Takeaways

• CAS 7784-18-1 refers to aluminum fluoride, AlF₃, with a molecular weight of 83.98 g/mol.
• Its principal industrial relevance is as a fluoride-containing material for aluminum smelting and selected ceramic, glass, metallurgical, and chemical applications.
• Assay alone is not enough; moisture, trace elements, particle size, packaging, and batch consistency also affect suitability.
• Use a written specification and compare quotations on equivalent commercial terms.
• Request a COA, SDS, technical data sheet, sample information, MOQ, lead time, and shipping details before approval.

Conclusion: The Practical Buying Decision

CAS 7784-18-1 aluminum fluoride is a useful industrial material when its chemical and physical characteristics match the process requirement. The best purchasing decision is based on verified identity, application-specific limits, consistent batch documentation, and a realistic supply plan. I recommend starting with a clear specification, qualifying a representative sample, and confirming commercial terms before moving to regular supply.

If you are sourcing aluminum fluoride for production, distribution, or a technical trial, contact Azeal Materials with your target quantity and specification. We can review the requirement and provide practical guidance on product form, documentation, packaging, and supply arrangements.

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