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  6. Indian Tantalum Pentoxide (Ta2O5) OG 99.99%

Indian Tantalum Pentoxide (Ta2O5) OG 99.99%

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last updated:Feb 06, 2026

Kowa Company, Ltd. General Trading Business Unit
Kowa Company, Ltd. General Trading Business Unit
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Ultra high purity 99.99%! Indian tantalum pentoxide | High-performance oxide suitable for optical and electronic materials | Optical films, devices, research and development

Tantalum pentoxide (Ta₂O₅) is a white powder oxide with high dielectric constant, high heat resistance, and high corrosion resistance, making it an essential material in the optical and electronics fields. This product is of Indian origin and is classified as OPTICAL GRADE (purity of 99.99% or higher), adopting a powdered form that offers extremely high transparency and refractive index control. It particularly achieves high transparency and high refractive index in optical glass and optical thin films, being utilized in cutting-edge optical devices, electronic components, and communication devices. Impurity management is thoroughly controlled at levels below ppm (with Fe, Cr, Mn, Mo, and Ni all below 1 ppm, Nb below 15 ppm, and F below 150 ppm), and strict quality assurance compliant with international standards is implemented. Furthermore, each lot undergoes analysis by ICP-OES and XRF before a Certificate of Analysis (COA) is issued, and it is supplied in drums with moisture-proof liners to maintain stability during long-term storage. We can flexibly accommodate orders from sample sizes (1kg, 5kg) to mass production scale, with a proven track record in both research and commercial applications in the European and Japanese markets. Additionally, adoption is progressing in the aerospace and next-generation electronics fields, with demand on the rise.

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AdobeStock_125890053_Preview.jpeg

Indian Tantalum Pentoxide (Ta2O5) OG 99.99%

AdobeStock_125890053_Preview.jpeg
AdobeStock_125890053_Preview.jpeg TaO SG Packing Drum + Liner (002).jpg
  • Related Link - https://www.kowa.co.jp/business/trading/general_tr…
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[Summary] - Product Name: Tantalum Pentoxide (Ta₂O₅) OPTICAL GRADE - Chemical Formula: Ta₂O₅ - Country of Origin: India - Packaging: Plastic drum (with inner liner) - Minimum Order Quantity: Available from samples (1kg, 5kg) - Delivery Time: Approximately 2 to 3 months after order (subject to stock and transportation conditions) [Specifications] - Appearance: White powder - Purity (Ta₂O₅ by Difference, excl. F & LOI): 99.99% or higher - Loss on Ignition (LOI, @1050℃): 0.2% or less - Particle Size: Powder (20 mesh or less) - Impurities (maximum values, % equivalent) - F: 0.015% - Cr: 0.0001% - Fe: 0.0001% - Mn: 0.0001% - Mo: 0.0001% - Ni: 0.0001% - Nb: 0.0015% [Contact Information] Kowa Company, Ltd. Industrial Related Business Division, Resource Materials Department, Inorganic Materials Section TEL: 03-3279-8057 FAX: 03-3279-8029 *For inquiries via the web, please use the inquiry form below.

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Optics: Optical glass, optical thin films, lens materials Electronic components: Tantalum capacitors, high dielectric constant oxide films Research and development: Optical devices, communication device materials Ceramics: High heat-resistant ceramics, special functional materials

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Kowa Co., Ltd. Company Profile

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Indian Tantalum Pentoxide (Ta₂O₅) OG 99.99%

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Kowa

Kowa Company, Ltd. General Trading Business Unit

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Kowa Co., Ltd. is a company with a history of over 120 years, founded in 1894 as a cotton fabric wholesaler. As the core company of the Kowa Group, it has both trading functions for the import and export of textiles, machinery, building materials, and trilateral trade, as well as manufacturing functions for pharmaceuticals, medical devices, vision units, energy-saving, and energy-creating related products, covering a wide range of business fields. One of its divisions, the Kowa Resource Materials Department, Inorganic Materials Section, engages in wholesale business for the import and export of raw materials and also acts as a sales agent for distinctive domestic and overseas raw materials.

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