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Tantalum Capacitor Paste

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EC No.:



Tantalum Paste
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Tantalum Capacitor Paste Properties

Molecular Weight



Silvery-gray solid

Melting Point

3017 °C

Boiling Point

5458 °C

Density (Theoretical)

16.69 g/cm3 (20 °C)

Crystal Phase / Structure

α: body-centered cubic (bcc) / β: tetragonal

Thermal Expansion

6.3 µm/m·K

Thermal Conductivity

57.5 W/m·K

Young's Modulus

186 GPa

Vickers Hardness

870–1200 MPa

Poisson's Ratio


Electrical Resistivity

131 nΩ·m (20 °C)


1.5 Paulings

Specific Heat

140 J/kg·K

Heat of Fusion

36.57 kJ/mol

Heat of Vaporization

753 kJ/mol

Tantalum Capacitor Paste Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Transport Information N/A

About Tantalum Capacitor Paste

Tantalum Capacitor Paste is a high-performing capacitor material due to tantalum's high melting point, high density, and and excellent electric conductivity; it can be can be used to print ultrathin anodes for cutting-edge capacitor technology. Tantalum paste is generally immediately available in most volumes, including bulk orders. American Elements can produce materials to custom specifications by request, in addition to custom compositions for commercial and research applications and new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into rod, bar or plate form, as well as numerous other machined shapes, nanomaterials, and in the form of solutions and organometallic compounds. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available, as is additional research, technical and safety (MSDS) data. Please contact us for information on lead time and pricing above.

Tantalum Capacitor Paste Chemical Identifiers

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Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Tantalum products. Tantalum (atomic symbol: Ta, atomic number: 73) is a Block D, Group 5, Period 6 element with an atomic weight of 180.94788. Tantalum Bohr ModelThe number of electrons in each of tantalum's shells is [2, 8, 18, 32, 11, 2] and its electron configuration is [Xe] 4f14 5d3 6s2. The tantalum atom has a radius of 146 pm and a Van der Waals radius of 217 pm. High Purity (99.999%) Tantalum (Ta) MetalTantalum was first discovered by Anders G. Ekeberg in 1802 in Uppsala, Sweden however, it was not until 1844 when Heinrich Rose first recognized it as a distinct element. In its elemental form, tantalum has a grayish blue appearance. Tantalum is found in the minerals tantalite, microlite, wodginite, euxenite, and polycrase. Due to the close relation of tantalum to niobium in the periodic table, Tantalum's name originates from the Greek word Tantalos meaning Father of Niobe in Greek mythology.


November 24, 2017
Los Angeles, CA
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