Zirconium tetrachloride (ZrCl4) has CAS No. 10026-11-6 and the chemical formula ZrCl4. It is an inorganic zirconium-halogen compound commonly used as an intermediate and reagent in zirconium chemistry, materials research, catalyst development, and related industrial processes. At Azeal Materials, we identify this product primarily by its CAS number, formula, anhydrous status, purity, packaging, and moisture-control requirements.
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The calculated molar mass of ZrCl4 is approximately 233.04 g/mol. It is generally supplied as a white to off-white crystalline solid, although color can vary with handling, impurities, or exposure conditions. Because zirconium tetrachloride is moisture-sensitive and reacts with water to form hydrolysis products, buyers should evaluate both chemical specifications and packaging integrity before procurement.
The CAS number is the most direct identifier for confirming that a quotation, specification sheet, safety document, or purchase order refers to zirconium tetrachloride rather than another zirconium compound. The formula indicates that one zirconium atom is associated with four chlorine atoms. For B2B sourcing, the CAS number should be checked together with the product name, grade, assay, physical form, and intended application.
| Identity item | Information |
|---|---|
| Preferred chemical name | Zirconium tetrachloride |
| CAS Registry Number | 10026-11-6 |
| Chemical formula | ZrCl4 |
| Approximate molar mass | 233.04 g/mol |
| Elemental composition | Zirconium and chlorine |
| Common physical description | White to off-white crystalline solid |
Zirconium tetrachloride is the standard English name for ZrCl4. It may also be described as zirconium(IV) chloride, zirconium chloride, or zirconium chloride anhydrous when the specification emphasizes the absence of intentional water of crystallization. The notation “ZrCl4” is not interchangeable with zirconium oxychloride, zirconyl chloride, or zirconium oxide, because these materials have different formulas, properties, and application profiles.
When reviewing international procurement documents, I recommend confirming the CAS number in addition to translations or commercial synonyms. Names can vary between suppliers and regions, while the CAS No. provides a more consistent reference point. However, the CAS number alone does not define purity, particle size, packaging, or suitability for a particular process.
ZrCl4 is valued as a zirconium-containing starting material because its chloride chemistry can support further synthesis and conversion. In controlled chemical systems, it may serve as a precursor for zirconium compounds, organometallic complexes, surface treatments, and advanced material development. Its exact role depends on the reaction system, solvent, temperature, atmosphere, and required impurity profile.
It is also relevant to vapor-phase and high-temperature research because zirconium tetrachloride can participate in transport or deposition chemistry under suitable conditions. I do not recommend assuming that every commercial grade is appropriate for vapor deposition or electronic-material applications. Those uses normally require additional information about trace metals, moisture, particle control, volatility behavior, and container design.
Laboratories may use zirconium tetrachloride as a reagent or precursor in the preparation of zirconium-containing compounds. In these applications, buyers commonly focus on assay, water content, impurity limits, and reliable lot-to-lot documentation. A smaller package may be practical for method development, while production-scale work generally requires a packaging plan that protects the material from repeated atmospheric exposure.
ZrCl4 can be considered in zirconium-based materials research, including precursor screening and surface-reaction studies. The correct choice depends on whether the process is solution-based, solid-state, or vapor-phase. For sensitive applications, I advise buyers to request a specification that clearly separates major assay from trace contaminants and moisture-related parameters.
During scale-up, zirconium tetrachloride may be evaluated as an input for downstream zirconium chemicals or process intermediates. Procurement teams should consider not only the nominal purity but also supply continuity, batch consistency, export documentation, safe handling information, and compatibility with the receiving facility. A technically suitable material can still create operational problems if the packaging or delivery format is not aligned with the plant’s handling system.
The most important distinction is usually between anhydrous zirconium tetrachloride and materials that contain water or have a different zirconium-chlorine-oxygen composition. “Anhydrous” should be treated as a specification requirement rather than an assumption, particularly when the customer’s process is sensitive to hydrolysis. Buyers should also confirm whether the supplier offers laboratory, industrial, high-purity, or customized grades.
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Other practical options may include different package sizes, sealed inner containers, controlled-atmosphere handling, and documentation formats. These options do not automatically indicate a different chemical identity; they describe how the same product is prepared for a specific procurement or application requirement. At Azeal Materials, we can review the intended use before recommending a suitable grade and package configuration.
CAS No. 10026-11-6 and formula ZrCl4 establish the basic identity, but they are not a complete purchasing specification. I recommend reviewing assay, moisture or water content, insoluble matter, trace-element limits, appearance, packaging, and storage instructions. For high-sensitivity processes, the buyer should define acceptable limits before requesting a quotation so that supplier offers can be compared on an equivalent basis.
I suggest beginning with the process requirement rather than the lowest quoted price. Define the intended application, annual or project quantity, required purity, moisture sensitivity, package size, destination, and expected delivery schedule. This information allows the supplier to assess whether a standard product is adequate or whether additional inspection, packaging, or documentation is needed.
Next, compare quotations using the same technical criteria. A quote that lists only “ZrCl4, 99%” may not provide enough information for a sensitive process, because it may omit water content, trace metals, analytical method, and packaging conditions. For a production project, I recommend requesting a representative certificate of analysis and confirming whether the reported values are typical specifications or batch-specific results.
One common mistake is confusing zirconium tetrachloride with zirconium oxychloride or another zirconium salt because the commercial names appear similar. Another is treating the formula as proof that a material is anhydrous or suitable for a specialized process. Buyers should also avoid approving a shipment without checking whether the outer package and inner seal are suitable for a moisture-sensitive solid.
Storage and handling instructions should be reviewed through the supplier’s current safety documentation and the buyer’s own site procedures. ZrCl4 should not be exposed casually to moisture, and the receiving team should be trained to manage the material according to the applicable safety requirements. If the application involves elevated temperature, vacuum, or vapor delivery, process-specific compatibility should be assessed by qualified technical personnel.
At Azeal Materials, we support B2B customers by confirming the fundamental identity first: zirconium tetrachloride, CAS No. 10026-11-6, formula ZrCl4, and approximate molar mass 233.04 g/mol. We then discuss the required purity, moisture sensitivity, package size, destination, and application before preparing a commercial offer. This approach helps reduce the risk of comparing technically different materials under the same short product name.
Our support can include product specification review, certificate-of-analysis coordination, packaging discussion, export documentation guidance, and delivery planning. Availability, lead time, minimum order quantity, and shipping conditions can vary by grade, order volume, destination, and current production schedule. For that reason, I recommend requesting a current quotation rather than relying on a general online price or an old specification.
ZrCl4 is zirconium tetrachloride, identified by CAS No. 10026-11-6 and the chemical formula ZrCl4. Its approximate molar mass is 233.04 g/mol, and it is commonly handled as a moisture-sensitive crystalline solid. These facts answer the basic identity question, but procurement decisions also require purity, moisture control, packaging, documentation, and application review.
If you are evaluating ZrCl4 for research, synthesis, materials development, or industrial supply, send Azeal Materials your target purity, estimated quantity, package preference, destination, and intended use. I can help you clarify the specification and identify the information needed for a technically and commercially comparable quotation.
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