Thorium Spheres

High Purity Th Spheres
CAS 7440-29-1

Product Product Code Order or Specifications
(2N) 99% Thorium Spheres TH-M-02-SPH Contact American Elements
(2N5) 99.5% Thorium Spheres TH-M-025-SPH Contact American Elements
(3N) 99.9% Thorium Spheres TH-M-03-SPH Contact American Elements
(3N5) 99.95% Thorium Spheres TH-M-035-SPH Contact American Elements
(4N) 99.99% Thorium Spheres TH-M-04-SPH Contact American Elements

Formula CAS No. PubChem SID PubChem CID MDL No. EC No Beilstein
Re. No.
Th 7440-29-1 166489 23960 N/A 231-139-7   N/A [Th] InChI=1S/Th ZSLUVFAKFWKJRC-UHFFFAOYSA-N

PROPERTIES Mol. Wt. Appearance Density Tensile Strength Melting Point Boiling Point Thermal Conductivity Electrical Resistivity Eletronegativity Specific Heat Heat of Vaporization Heat of Fusion MSDS
232.03 N/A 232.03 kg/m³ 144 MPa 1842 °C 4820 °C N/A N/A N/A N/A N/A N/A Safety Data Sheet

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 (See also application discussion at Nanotechnology Information and at Quantum Dots) and in the form of solutions and organometallics. We also produce Thorium as rods, powder and plates. Other shapes are available by request.

Thorium (Th) atomic and molecular weight, atomic number and elemental symbol 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 Thorium In 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. For more information on Thorium, including properties, satefy data, research, and American Elements' catalog of Thorium products, visit the Thorium Information Center.


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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 Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.

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Production Catalog Available in 36 Countries & Languages

Recent Research & Development for Thorium

  • Thorium induced cytoproliferative effect in human liver cell HepG2: Role of insulin-like growth factor 1 receptor and downstream signaling. Ali M, Kumar A, Pandey BN. Chem Biol Interact. 2014.
  • Tetrapositive Plutonium, Neptunium, Uranium and Thorium Coordination Complexes: Chemistry Revealed by Electron Transfer and Collision Induced Dissociation. Gong Y, Tian G, Rao L, Gibson JK. J Phys Chem A. 2014.
  • Introduction of Bifunctional Groups into Mesoporous Silica for Enhancing Uptake of Thorium(IV) from Aqueous Solution. Yuan LY, Bai ZQ, Zhao R, Liu YL, Li ZJ, Chu SQ, Zheng LR, Zhang J, Zhao YL, Chai ZF, Shi WQ. ACS Appl Mater Interfaces. 2014.
  • (229)Thorium-doped calcium fluoride for nuclear laser spectroscopy. Dessovic P, Mohn P, Jackson RA, Winkler G, Schreitl M, Kazakov G, Schumm T. J Phys Condens Matter. 2014.
  • High-Temperature Phase Transitions, Spectroscopic Properties, and Dimensionality Reduction in Rubidium Thorium Molybdate Family. Xiao B, Gesing TM, Kegler P, Modolo G, Bosbach D, Schlenz H, Suleimanov EV, Alekseev EV. Inorg Chem. 2014.
  • Photochemical route to actinide-transition metal bonds: synthesis, characterization and reactivity of a series of thorium and uranium heterobimetallic complexes. Ward AL, Lukens WW, Lu CC, Arnold J. J Am Chem Soc. 2014.
  • The permanent electric dipole moment of thorium sulfide, ThS. Le A, Heaven MC, Steimle TC. J Chem Phys. 2014 Jan.
  • Thorotrast and in vivo thorium dioxide: Numerical simulation of 30 years of a radiation absorption by the tissues near a large compact source. Bianconi A. Phys Med. 2014 Feb
  • On the structure of thorium and americium adenosine triphosphate complexes. Mostapha S, Fontaine-Vive F, Berthon L, Boubals N, Zorz N, Solari PL, Charbonnel MC, Den Auwer C. Int J Radiat Biol. 2014.
  • The role of chemical interactions between thorium, cerium, and lanthanum in lymphocyte toxicity. Oliveira MS, Duarte IM, Paiva AV, Yunes SN, Almeida CE, Mattos RC, Sarcinelli PN. Arch Environ Occup Health. 2014.
  • Photochemical route to actinide-transition metal bonds: synthesis, characterization and reactivity of a series of thorium and uranium heterobimetallic complexes. Ward AL, Lukens WW, Lu CC, Arnold J. J Am Chem Soc. 2014.
  • Thorium and Uranium Carbide Cluster Cations in the Gas Phase: Similarities and Differences between Thorium and Uranium. Pereira CC, Maurice R, Lucena AF, Hu S, Gonçalves AP, Marçalo J, Gibson JK, Andrews L, Gagliardi L. Inorg Chem. 2013 create date:2013/09/21 | first author:Pereira CC
  • Thorium induced cytoproliferative effect in human liver cell HepG2: Role of insulin-like growth factor 1 receptor and downstream signaling. Ali M, Kumar A, Pandey BN. Chem Biol Interact. 2014.
  • Synthesis and Characterization of Thorium(IV) and Uranium(IV) Corrole Complexes. Ward AL, Buckley HL, Lukens WW, Arnold J. J Am Chem Soc. 2013 create date:2013/09/06 | first author:Ward AL
  • Systematic Investigation of Thorium(IV)- and Uranium(IV)-Ligand Bonding in Dithiophosphonate, Thioselenophosphinate, and Diselenophosphonate Complexes. Behrle AC, Barnes CL, Kaltsoyannis N, Walensky JR. Inorg Chem. 2013 | first author:Behrle AC
  • Comparison of the Reactivity of 2-Li-C(6) H(4) CH(2) NMe(2) with MCl(4) (M=Th, U): Isolation of a Thorium Aryl Complex or a Uranium Benzyne Complex. Seaman LA, Pedrick EA, Tsuchiya T, Wu G, Jakubikova E, Hayton TW. Angew Chem Int Ed Engl. 2013 | first author:Seaman LA
  • Thorium fluorides ThF, ThF2, ThF3, ThF4, ThF3(F2), and ThF5- characterized by infrared spectra in solid argon and electronic structure and vibrational frequency calculations. Andrews L, Thanthiriwatte KS, Wang X, Dixon DA. Inorg Chem. 2013 create date:2013/06/29 | first author:Andrews L
  • Ethyl thiosemicarbazide intercalated organophilic calcined hydrotalcite as a potential sorbent for the removal of uranium(VI) and thorium(IV) ions from aqueous solutions. Anirudhan TS, Jalajamony S. J Environ Sci (China). 2013 | first author:Anirudhan TS
  • Adsorption of lanthanides(III), uranium(VI) and thorium(IV) from nitric acid solutions by carbon inverse opals modified with tetraphenylmethylenediphospine dioxide. Turanov AN, Karandashev VK, Masalov VM, Zhokhov AA, Emelchenko GA. J Colloid Interface Sci. 2013 | first author:Turanov AN
  • Current commentary: thorium-based nuclear power. Rhodes CJ. Sci Prog. 2013 | first author:Rhodes CJ