Thorium Spheres



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(2N) 99% Thorium Spheres TH-M-02-SPH Request Quote
(2N5) 99.5% Thorium Spheres TH-M-025-SPH Request Quote
(3N) 99.9% Thorium Spheres TH-M-03-SPH Request Quote
(3N5) 99.95% Thorium Spheres TH-M-035-SPH Request Quote
(4N) 99.99% Thorium Spheres TH-M-04-SPH Request Quote


Molecular Weight 232.03


Melting Point 1842 °C
Boiling Point 4820 °C
Density 232.03 kg/m3
Tensile Strength 144 MPa
Thermal Conductivity N/A
Electronegativity N/A
Specific Heat N/A
Heat of Vaporization N/A

Health & Safety Info  |  MSDS / SDS

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information N/A
Globally Harmonized System of Classification and Labelling (GHS) N/A


High Purity SphereAmerican 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 Pharmacopeia/British Pharmacopeia) and follows applicable ASTM testing standards.See safety data and research below and pricing/lead time above. American Elements specializes in producing Thorium as ribbon in various thicknesses and sizes. Most ribbon is rolled for use in coating and thin film Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes including Thermal and Electron Beam (E-Beam) Evaporation, Low Temperature Organic Evaporation, Atomic Layer Deposition (ALD), Organometallic and Chemical Vapor Deposition (MOCVD) for specific applications such as fuel cells and solar energy. Thicknesses up to 0.02" and widths up to 1" are available for most metals. Materials are produced using crystallization, solid state and other ultra high purification processes such as sublimation. American Elements specializes in producing custom compositions for commercial and research applications and for 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 other machined shapes and through other processes such as nanoparticles and in the form of solutions and organometallics. We also produce Thorium as rods, powder and plates. Other shapes are available by request.



Chemical Identifiers

Formula Th
CAS 7440-29-1
Pubchem CID 23960
EC No. 231-139-7
Beilstein Registry No. N/A
InchI Identifier InChI=1S/Th

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 Products & Element Information

See more Thorium products. Thorium (atomic symbol: Th, atomic number: 90) is a Block F, Group 3, Period 7 element with an atomic weight of 232.03806. The number of electrons in each of thorium's shells is [2, 8, 18, 32, 18, 10, 2] and its electron configuration is [Rn] 6d2 7s2. Thorium Bohr ModelThe thorium atom has a radius of 179 pm and a Van der Waals radius of 237 pm. Thorium was first discovered by Jöns Jakob Berzelius in 1829. The name Thorium originates from the Scandinavian god Thor, the Norse god of war and thunder. Elemental ThoriumIn its elemental form, thorium has a silvery, sometimes black-tarnished, appearance. It is found in small amounts in most rocks and soils. Thorium is a radioactive element that is currently the best contender for replacing uranium as nuclear fuel for nuclear reactors. It provides greater safety benefits, an absence of non-fertile isotopes, and it is both more available and abundant in the Earth's crust than uranium.

Recent Research

Surprising coordination for low-valent actinides resembling uranyl(vi) in thorium(iv) organic hybrid layered and framework structures based on a graphene-like (6,3) sheet topology., Li, Yuxiang, Weng Zhehui, Wang Yanlong, Chen Lanhua, Sheng Daopeng, Diwu Juan, Chai Zhifang, Albrecht-Schmitt Thomas E., and Wang Shuao , Dalton Trans, 2016 Jan 6, Volume 45, Issue 3, p.918-21, (2016)

Visualization of the glomerular endothelial glycocalyx by electron microscopy using cationic colloidal thorium dioxide., Hegermann, Jan, Lünsdorf Heinrich, Ochs Matthias, and Haller Hermann , Histochem Cell Biol, 2016 Jan, Volume 145, Issue 1, p.41-51, (2016)

White phosphorus activation by a Th(iii) complex., Formanuik, Alasdair, Ortu Fabrizio, Beekmeyer Reece, Kerridge Andrew, Adams Ralph W., and Mills David P. , Dalton Trans, 2016 Feb 14, Volume 45, Issue 6, p.2390-3, (2016)

Stabilization of Tetravalent 4f (Ce), 5d (Hf), or 5f (Th, U) Clusters by the [α-SiW9O34](10-) Polyoxometalate., Duval, Sylvain, Béghin Sébastien, Falaise Clément, Trivelli Xavier, Rabu Pierre, and Loiseau Thierry , Inorg Chem, 2015 Sep 8, Volume 54, Issue 17, p.8271-80, (2015)

A non-symmetric pillar[5]arene based on triazole-linked 8-oxyquinolines as a sequential sensor for thorium(IV) followed by fluoride ions., Fang, Yuyu, Li Caixia, Wu Lei, Bai Bing, Li Xing, Jia Yiming, Feng Wen, and Yuan Lihua , Dalton Trans, 2015 Sep 7, Volume 44, Issue 33, p.14584-8, (2015)

Fluorogenic Thorium Sensors Based on 2,6-Pyridinedicarboxylic Acid-Substituted Tetraphenylethenes with Aggregation-Induced Emission Characteristics., Wen, Jun, Dong Liang, Hu Sheng, Li Weiyi, Li Shuo, and Wang Xiaolin , Chem Asian J, 2015 Sep 30, (2015)

Detection of the Thorium Dimer via Two-Dimensional Fluorescence Spectroscopy., Steimle, Timothy, Kokkin Damian L., Muscarella Seth, and Ma Tongmei , J Phys Chem A, 2015 Sep 3, Volume 119, Issue 35, p.9281-5, (2015)

Separation of thorium ions from wolframite and scandium concentrates using graphene oxide., Jankovský, Ondřej, Sedmidubský David, Šimek Petr, Klímová Kateřina, Bouša Daniel, Boothroyd Chris, Macková Anna, and Sofer Zdeněk , Phys Chem Chem Phys, 2015 Sep 23, Volume 17, Issue 38, p.25272-7, (2015)

Direct Compositional Characterization of (U,Th)O2 Powders, Microspheres, and Pellets Using TXRF., Dhara, Sangita, Prabhat Parimal, and Misra N L. , Anal Chem, 2015 Oct 20, Volume 87, Issue 20, p.10262-7, (2015)