Tantalum(CAS 7440-25-7)
| Purity | Grade | Package | Stock | Price | Quantity |
| 99.9%,60nm | Extra Pure | 1G | In Stock | 14 USD
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| 99.9%,60nm | Extra Pure | 5G | In Stock | 34 USD
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| 99.9%,60nm | Extra Pure | 25G | In Stock | 119 USD
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| 99.9%,60nm | Extra Pure | 100G | In Stock | 305 USD
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| 99.9%,60nm | Extra Pure | 500G | In Stock | 2443 USD
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| powder,99.9%,~200 mesh | Extra Pure | 1G | In Stock | 6 USD
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| powder,99.9%,~200 mesh | Extra Pure | 5G | In Stock | 14 USD
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| powder,99.9%,~200 mesh | Extra Pure | 25G | In Stock | 40 USD
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| powder,99.9%,~200 mesh | Extra Pure | 100G | In Stock | 140 USD
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| powder,99.9%,~200 mesh | Extra Pure | 500G | In Stock | 601 USD
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Verified In Stock
Fast Shipping ISO 9001
Quality System
Applications of 7440-25-7
| Industry | Application | Process |
|---|---|---|
| Electronics | Manufacturing high-reliability electrolytic capacitors (tantalum capacitors) for precision electronic devices such as smartphones, computers, and medical equipment | Powder metallurgy, anodization, sintering |
| Aerospace | High-temperature, corrosion-resistant components including engine parts, heat exchangers, and rocket nozzles | Forging, precision casting, welding |
| Chemical Processing | Acid-resistant equipment (e.g., reactors, heat exchangers, valves, pipe linings) and anodic protection materials for chlor-alkali production | Cold rolling, welding, coating |
| Medical | Surgical implants (e.g., bone plates, suturing needles, vascular stents), leveraging biocompatibility and corrosion resistance | 3D printing, machining, polishing |
| Energy | Cladding materials and control components for nuclear reactors, plus high-temperature alloy additives | Alloying, powder metallurgy, hot pressing |
| Cemented Carbides | Tantalum carbide (TaC) for cutting tools, drill bits, and wear-resistant components to enhance hardness and high-temperature performance | Carburization, sintering |
| Optical Glass | Tantalum oxide addition to increase glass refractive index for camera lenses and optical instruments | High-temperature melting, forming |
| Superconducting Materials | Niobium-tantalum alloys (e.g., Nb₃Sn) for superconducting magnets used in MRI systems and particle accelerators | Alloy melting, wire drawing |
| Jewelry | Wear-resistant jewelry (e.g., rings, watches) as a platinum substitute | Precision casting, polishing |
| Defense & Military | Armor-piercing projectile cores, armor plating, and highly stable components for military electronic equipment | Powder metallurgy, hot forming |
Physical and chemical properties of 7440-25-7
Boiling Point |
9797 °F |
|---|---|
Density |
16.65 (metal) 14.40 (powder) |
Exact Mass |
180.94800 |
Exposure Limits |
ACGIH: TWA 0.5 ppm(2.5 mg/m3); Ceiling 2 ppm (Skin) OSHA: TWA 3 ppm NIOSH: IDLH 30 ppm(250 mg/m3); TWA 3 ppm(2.5 mg/m3); Ceiling 6 ppm(5 mg/m3) |
Flash Point |
>250 °C |
Index of Refraction |
Index of refraction: 2.05 |
LogP |
-1 at 20℃ |
Melting Point |
5425 °F |
Merck |
13,9143 |
Molecular Formula |
Ta |
Molecular Weight |
180.94800 |
Odor |
Odorless |
resistivity |
13.5 μΩ-cm, 20°C |
Solubility |
Insoluble |
Stability |
Stable. Powder is very flamable. |
Storage condition |
no restrictions. |
Vapour Pressure |
0 mmHg (approx) |
Water Solubility |
very resistant to attack by acids except HF, resistant to alkali solutions [KIR83] |
Q&A for CAS 7440-25-7
1. How can I verify product quality?
Every batch of our Chemical Reagents is tested to meet ISO 9001 standards. We provide COA & NMR & SDS Provided with each shipment. Batch COA available for verification, and third-party retesting is supported. A full refund is offered if our data is incorrect.
2. What is the delivery time?
Orders from Ready stock / In stock items typically Ships Tomorrow via Fast Shipping via FedEx/DHL/UPS. International deliveries usually arrive within 7 business days, subject to customs clearance.
3. What if the received product doesn’t meet quality standards?
If your Lab Grade Chemical Reagents do not match the Batch COA available, we will issue a replacement or a full refund upon verification.
4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged following international regulations. We provide SDS Provided with all hazardous shipments to ensure safe and compliant transport.
5. Do you offer technical support?
Yes. Our Lab Supplier team is available to assist with questions about product usage, storage, Lab Grade requirements, applications, and more.
6. Are volume discounts available?
Yes. For bulk orders of Chemical Reagents, we offer competitive pricing. Submit a quotation request and we’ll provide a tailored offer.
7. Do you provide samples?
Yes, samples are available for selected Lab Grade products. Please submit a request to confirm availability and specifications.
8. Do you have products in stock?
Yes. Items labeled In stock / Ready stock on our website are available for immediate shipment, usually within 1–2 business days. Large packs or custom specifications require lead time confirmation.
9. Can you customize purity or packaging?
Yes. We support customization of Lab Grade purity, packaging size, and special testing requirements. Share your needs and we’ll provide a tailored solution.
10. Is the COA consistent with the shipped batch?
Yes. Batch COA available matches the actual shipment. COAs shown online are for reference or from previous batches.
11. Do you support long-term supply agreements?
Yes. We offer Lab Supplier services for stable batch consistency, pricing agreements, and safety stock for long-term customers to ensure uninterrupted supply.
12. What payment methods do you accept?
We accept Pay Local Currency via bank transfer (T/T), PayPal, and other methods. Credit terms are available for qualified long-term partners.
Download SDS of 7440-25-7
Pictograms |
 |
|---|---|
Signal Word |
Danger |
Hazard Statements |
H228 Flammable solid H252 Self-heating in large quantities; may catch fire |
Safety Data Sheet |
Download COA of 7440-25-7
Operate under the ISO 9001 system
