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HS Code |
752458 |
| Chemical Name | Tantalum Pentachloride |
| Chemical Formula | TaCl5 |
| Molar Mass | 358.205 g/mol |
| Appearance | White to off-white crystalline solid |
| Density | 2.68 g/cm3 |
| Melting Point | 216 °C |
| Boiling Point | 239 °C (sublimes) |
| Solubility In Water | Reacts with water |
| Cas Number | 7721-01-9 |
| Odor | Pungent, chlorine-like |
| Hazard Class | Corrosive |
| Storage Conditions | Store in a cool, dry, tightly sealed container away from moisture and incompatible substances |
As an accredited Tantalum Pentachloride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Tantalum Pentachloride, 100 grams, is supplied in a tightly sealed amber glass bottle, with moisture-proof cap, and hazard labeling. |
| Shipping | Tantalum Pentachloride should be shipped in tightly sealed, corrosion-resistant containers under dry, inert conditions, as it is highly moisture-sensitive. Transport in compliance with hazardous materials regulations, avoiding exposure to water, heat, and incompatible substances. Clearly label containers and include safety documentation. Handle only by trained personnel using appropriate personal protective equipment. |
| Storage | Tantalum pentachloride should be stored in tightly sealed containers made of glass or inert materials, away from moisture and humidity, as it reacts vigorously with water, releasing toxic fumes. Keep it in a cool, dry, well-ventilated area, separated from incompatible substances such as strong bases and oxidizers. Always ensure proper labeling and secure storage to prevent accidental exposure or spillage. |
Applications of Tantalum Pentachloride in Industrial ManufacturingTantalum pentachloride serves as a critical specialty chemical in several advanced manufacturing sectors, particularly where precision, purity, and reactivity are required for high-performance materials. Our production adheres to rigorous quality management at every batch to meet the strictest requirements across our client industries. Below, we outline verified downstream applications where our material provides defined technical benefits for each sector. 1. Electronic-Grade Tantalum Capacitor ProductionIn the high-end electronics industry, manufacturers use tantalum pentachloride as a precursor to produce tantalum oxide thin films and high-purity tantalum metal powders, essential for tantalum electrolytic capacitors. Stringent compliance with purity standards ensures capacitors meet low-leakage and stable dielectric performance requirements for telecommunications, medical implantables, and miniaturized electronics. The material is introduced at the reduction or chemical vapor deposition stage, directly determining the quality of electrode layers. Final capacitors deliver high volumetric efficiency and reliability for advanced circuit designs. Industry compliance standards
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2. Synthesis of Tantalum-Based Catalysts for Specialty PolymerizationCatalyst developers in the petrochemicals sector use tantalum pentachloride as a crucial metal center source for the fabrication of homogeneous and supported tantalum catalysts. These catalysts enable precision control over olefin polymerization and metathesis reactions, supporting the production of specialty plastics and elastomers. The compound is introduced by solution-phase impregnation or in situ coordination in the catalyst synthesis pipeline, with handling protocols conforming to good laboratory and manufacturing practices. Industry compliance standards
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3. Chemical Vapor Deposition of Tantalum-Based Coatings for Hard-MetalsThe tool coatings and hard-metal fabrication industries incorporate tantalum pentachloride as a feedstock in CVD reactors to generate ultra-thin, wear-resistant tantalum nitride (TaN) or tantalum carbide (TaC) coatings. These coatings enhance component lifetimes in aggressive machining, aerospace, or aviation environments. Feedstock purity and controlled vapor flux are critical for ensuring dense, adherent film growth on cutting tools, dies, and high-performance metal substrates. Industry compliance standards
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Specialty inorganic and organometallic laboratories source tantalum pentachloride to synthesize organotantalum compounds and tantalum alkoxides—key intermediates for research and custom advanced materials. These compounds serve as precursors in the fabrication of high-purity ceramics, glass, and functional thin films for optics and microelectronics. The pure chloride is introduced at the initial synthesis stage, where its controlled reactivity directs molecular structure and downstream purity. Industry compliance standards
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5. High-Purity Tantalum Metallurgy and Sputtering Target PreparationSpecialty metallurgy operations use tantalum pentachloride as an intermediate in transforming raw tantalum into high-purity sponges and metallic tantalum, which are pressed and sintered to form sputtering targets and structural mill products. The compound participates in multistage reduction and purification sequences that remove trace contaminants below industry-required limits for electronics and photonics sectors. Industry compliance standards
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Tantalum pentachloride attracts attention in any modern inorganic chemistry lab. Over thirty years of manufacturing experience have shown us what researchers and industry need from this product: a reliable precursor for advanced syntheses, pure enough for demanding applications, and stable enough to arrive at the bench in the same state it left ours. This isn’t just a standard material–it’s a delicate, reactive halide that has earned its status among specialists in catalyst development, CVD processes, and high-performance material fabrication.
Those who’ve handled tantalum compounds know the practical difference between materials made at lab scale and those coming out of a purpose-built, controlled production line. Tantalum pentachloride has made its reputation not just through reactivity, but through predictable behavior batch after batch. Customers demand fine, free-flowing white to off-white powder, with minimal traces of oxychlorides and no metallic contamination from equipment. We found early on that glass and specialized alloy reactors produce pure, moisture-sensitive TaCl5 with an unmistakable crystalline appearance.
This isn’t just for show. Industry users demand reproducibility. Trace contaminants–elements like Fe, Ni, Cr, Si–can throw off catalytic activities and downstream product performance, especially for companies producing thin films, optical coatings, and high-purity tantalum alloys. Meeting this standard is all about control. From raw tantalum (with careful screening for Nb and W) to tightly managed chlorination, we obsess over every step and back it up with transparent batch analyses. That’s how the end-user ends up with TaCl5 that doesn’t just meet the number on the sheet but performs in real formulation work without surprises.
Our chemists push for purity levels consistently above 99.9%. This doesn’t come through superficial surface treatments or batch blending; it’s a matter of process design. Temperature programming, dry inert gas feeds, and rapid packaging all play a role in stopping hydrolysis before it can begin. Water vapor, even in the tiniest trace, is the enemy. Every year brings new analytical data, and every improvement becomes baked into standard practice. Powder or crushed flake? Our team can adjust particle size distribution based on feedback from coating and catalyst fields. Our focus stays on what the end user actually finds important: consistent, reactive product, easy to transfer and dissolve under anhydrous conditions.
Every conversation we’ve had with engineers and chemists—whether at the pilot plant or in a university crystal-growth department—revolves around outcomes. Tantalum pentachloride’s chloride ligands come off smoothly, allowing for delicate control in synthesis. In the world of high-k dielectrics, specialty glasses, and advanced ceramics, this is no minor point. TaCl5 is the preferred tantalum source in non-aqueous processing routes because it readily forms tantalum oxide films after hydrolysis, all without the baggage of alkali or alkaline earth impurities carried by other Ta sources.
When making alkoxide complexes, halide-bridged cluster compounds, or complex mixed-metal oxides, researchers turn to TaCl5 for its versatility. Its reactivity exceeds that of lesser chlorides, like niobium pentachloride, which forms more stable dimeric species; tantalum pentachloride gives more direct access to monomeric intermediates—crucial for controlled synthesis in organometallic chemistry and vapor deposition.
Few people outside chemical manufacturing appreciate how sensitive TaCl5 is to the environment. It hydrolyzes on contact with air; one careless seal, or a slip in drying protocol, and the whole batch loses its utility. Our process never relies on ad hoc handling: everything runs in closed, inert circuits, and quick-seal ampoules or moisture-tight steel cans handle shipment. These details seem mundane until you hear the stories from clients who lost days or weeks remixing formulations after discovering invisible hydrolysis had made their pentachloride unusable.
Lab-scale material sometimes arrives yellowed, fused, or laced with oxide or oxychloride. That’s a flag that supplier discipline is missing. In contrast, our target is always crystal-clear (sometimes literally): a clean, uniform free-flowing powder, with batch COAs confirming the low-levels of moisture (less than 100 ppm), heavy metals, and particulates. It’s hard-earned knowledge, built by dozens of hands over tens of years.
TaCl5 isn’t the only tantalum product that finds its way into advanced manufacturing, but it fills a space no basic oxide or alkoxide can touch. For processes demanding volatility and reactivity—chemical vapor deposition springs to mind—TaCl5 moves smoothly from solid to vapor without cumbersome side reactions. Compare to tantalum(V) oxide, which is stable and easy to ship but sits inert unless forced to extremes.
Another regular comparison draws out the benefits of using TaCl5 for alkoxide synthesis. Direct reaction with alcohols provides highly pure tantalum alkoxides, without introducing alkali metals or carbonate residues. That’s a recurring concern raised by our clients in electronics sectors where sodium or calcium at parts-per-million levels can sabotage entire lots of high-purity ceramics. Oxides and hydroxides can’t offer that precision.
Niobium pentachloride, the obvious chemical cousin, shares some synthetic routes but differs in volatility, color, and coordination chemistry. Tantalum pentachloride, produced under rigorous conditions, provides more reactive monomeric material, which translates into better performance in some mixed-metal oxide growth and transfer reactions.
Scaling up any new material synthesis brings up a gap between lab-grade chemicals and what a production line needs. Small research packs–50 grams or less–arrive in glass ampoules suited for inert-atmosphere labs. But when a pilot plant wants 2 or 20 kilograms, packaging shifts to high-integrity metal cans with argon blanketing. Engineers at process development sites share feedback with us on container compatibility, transfer lines, and even what happens when TaCl5 meets gaskets and valves. We continually adapt, keeping process engineers in the loop about every improvement, from tighter argon seals to surface coatings on container linings.
TaCl5 transport isn’t a paperwork formality. Local transport rules sometimes throw in hurdles, but our logistics team understands how to schedule cold-chain routes if needed, especially during hot summers. Keeping temperature below the 242°C melting point avoids clumping and makes for smoother transfer to receiving hoppers.
A product this sensitive calls for well-trained hands, and every batch we ship goes out with up-to-date handling recommendations. Moisture exclusion ranks top—no exceptions. Our team relies on years of practice to keep exposure under control, both for safety and to avoid frustration down the line from loss of reactivity. Every lab and plant using TaCl5 picks up these habits. They know the familiar odor if hydrolysis kicks in and can spot the change in powder texture when traces of oxychloride begin to form.
Our own line workers remind us constantly: “protect the batch from moisture, and the client will get exactly what they ordered.” We send out every shipment with clear, simple instructions and on-call technical support, making sure even first-time users understand the reasons behind every step.
Unlike commodity chemicals, high-purity TaCl5 production never stands still. We treat every feedback note as a step in the manufacturing roadmap. One process developer pointed out a slight shift in color during shelf life under summer conditions. Our QC team used that tip to tweak inert gas levels and double-check drum liners for permeability.
In the early days, moisture intrusion happened more often, leading to sporadic batch returns. Real experience–phone calls at midnight from a customer spotting haze in solution, for example—drives process upgrades better than any theoretical protocol. In our plant, feedback chains from end users feed directly into process audits and design improvements, keeping us grounded in real-world performance, not theoretical purity.
Every kilogram moved out of our drying room has seen thousands of hours of R&D behind its manufacture. At least half our staff has research backgrounds; they enjoy reading scientific journals and spotting future applications for TaCl5, from next-generation supercapacitor electrodes to ultra-thin film electronics. Customers often pilot innovative surface coatings or catalysts using our TaCl5, and the updates they share back guide our future upgrades as much as anything happening in the lab.
No chemical manufacturer ignores the realities behind specialty metals. Tantalum supply depends on traceability back to the mine–a lesson reinforced by the industry’s focus on conflict-free sourcing. Decades ago, sourcing relied on whatever tantalum could be refined, but those days are gone. Today, documentation covering every ingot and drum shipment accompanies the raw material intake. Batches are tracked through melting, dissolution, chlorination, and packaging, tied to a paper and digital trail so procurement officers and compliance coordinators get full transparency.
Our team still remembers the market swings; flood years fill the storeroom, droughts trigger rationed output and customer prioritization. We keep enough reserve tantalum on hand to weather a few stormy quarters, always looking for supply partners who value quality and traceability over simple volume. No batch leaves the plant without verification against both chemical and ethical expectations.
As technology advances, new applications push the limits of tantalum chemistry. TaCl5 sees experimental use in atomic layer deposition, as an upgrade over older, less controllable tantalum sources. Process teams reach out to us regularly for advice on controlling growth rates, handling co-reactant compatibility, or mitigating metal loss inside vapor-phase systems. Our in-house experts often collaborate with external R&D teams, answering questions around vapor pressure, chemical compatibility, or impurity profiles in novel process setups.
Some manufacturing groups report success with TaCl5 in composite material pre-treatment, building surface chemistry that boosts adhesion in specialized elastomers or hybrid plastics. Others put it to work in organometallic frameworks targeting high-efficiency catalysis. We see our job as more than maintaining old standards: it’s about constant adaptation, sharing practical experience, and applying a manufacturer’s eye for workable, scalable solutions.
Tantalum pentachloride marks a unique intersection between industrial rigor and scientific creativity. Every batch walks a tightrope between maximum reactivity and absolute stability, demanding skill from those who make it and those who use it. Through decades refining, packaging, and supporting TaCl5, we’ve built up best practices from direct, sometimes challenging, feedback and hands-on lab experience. This ongoing exchange keeps us improving and helps ensure that when product leaves our door, it delivers what the user expected. That’s trust rooted not in claims, but in the steady, practical delivery of results.
