Boron Circle

High Purity B Circles
CAS 7440-42-8

Product Product Code Order or Specifications
(2N) 99% Boron Circle BO-M-02-CRCL Contact American Elements
(3N) 99.9% Boron Circle BO-M-03-CRCL Contact American Elements
(4N) 99.99% Boron Circle BO-M-04-CRCL Contact American Elements
(5N) 99.999% Boron Circle BO-M-05-CRCL Contact American Elements

Formula CAS No. PubChem SID PubChem CID MDL No. EC No Beilstein
Re. No.
B 7440-42-8 24856149 5462311 MFCD00134034 231-151-2 N/A B InChI=1S/B ZOXJGFHDIHLPTG-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
10.811 Black/Brown 2.34 cryst. gm/cc N/A 2079 °C 2550 °C 0.274 W/cm/K @ 298.2 K 1.8 x 1012 microhm-cm @ 0 °C 2.0 Paulings 0.245 Cal/g/K @ 25 °C 128 K-Cal/gm atom at 2550 °C 5.3 Cal/gm mole Safety Data Sheet

American Elements specializes in producing high purity Boron Circles with the highest possible densityHigh Purity (99.99%) Boron Circleand smallest possible average grain sizes for use in semiconductor, chemical vapor deposition (CVD) and physical vapor deposition (PVD) display and optical applications. Our standard Circle sizes range from 1" to 8" in diameter and from 2mm to 1/2" thick. We can also provide Circles outside this range. 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. 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. See safety data and research below and pricing/lead time above. We also produce Boron as rod, pellets, powder, pieces, granules, ingot, wire, and in compound forms, such as oxide. Other shapes are available by request.

Boron(B) atomic and molecular weight, atomic number and elemental symbolBoron (atomic symbol: B, atomic number: 5) is a Block P, Group 13, Period 2 element with an atomic weight of 10.81. Boron Bohr Model The number of electrons in each of boron's shells is 2, 3 and its electron configuration is [He] 2s2 2p1. The boron atom has a radius of 90 pm and a Van der Waals radius of 192 pm. Boron was discovered by Joseph Louis Gay-Lussac and Louis Jacques Thénard in 1808. It was first isolated by Humphry Davy, also in 1808. Boron is classified as a metalloid is not found naturally on earth. Elemental Boron Along with carbon and nitrogen, boron is one of the few elements in the periodic table known to form stable compounds featuring triple bonds.Boron has an energy band gap of 1.50 to 1.56 eV, which is higher than that of either silicon or germanium. Boron is found in borates, borax, boric acid, colemanite, kernite, and ulexite.The name Boron originates from a combination of carbon and the Arabic word buraqu meaning borax. For more information on boron, including properties, safety data, research, and American Elements' catalog of boron products, visit the Boron 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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Recent Research & Development for Boron

  • S.J. Grauer, E.J.F.R. Caron, N.L. Chester, M.A. Wells, K.J. Daun, Investigation of melting in the Al–Si coating of a boron steel sheet by differential scanning calorimetry, Journal of Materials Processing Technology, Volume 216, February 2015
  • Leili Tafaghodi Khajavi, Kazuki Morita, Takeshi Yoshikawa, Mansoor Barati, Thermodynamics of boron distribution in solvent refining of silicon using ferrosilicon alloys, Journal of Alloys and Compounds, Volume 619, 15 January 2015
  • Shigeaki Ono, Kenji Mibe, Naohisa Hirao, Yasuo Ohishi, In situ Raman spectroscopy of cubic boron nitride to 90 GPa and 800 K, Journal of Physics and Chemistry of Solids, Volume 76, January 2015
  • Zhaofu Zhang, Zhaohui Geng, Danyun Cai, Tongxi Pan, Yixin Chen, Liyuan Dong, Tiege Zhou, Structure, electronic and magnetic properties of hexagonal boron nitride sheets doped by 5d transition metal atoms: First-principles calculations and molecular orbital analysis, Physica E: Low-dimensional Systems and Nanostructures, Volume 65, January 2015
  • Zihab Sohbatzadeh, M.R. Roknabadi, Nasser Shahtahmasebi, Mohammad Behdani, Spin-dependent transport properties of an armchair boron-phosphide nanoribbon embedded between two graphene nanoribbon electrodes, Physica E: Low-dimensional Systems and Nanostructures, Volume 65, January 2015
  • B. Podgornik, T. Kosec, A. Kocijan, Č. Donik, Tribological behaviour and lubrication performance of hexagonal boron nitride (h-BN) as a replacement for graphite in aluminium forming, Tribology International, Volume 81, January 2015
  • Jianfeng Wang, Liguo Wang, Shaokang Guan, Shijie Zhu, Ran Li, Tao Zhang, Effects of boron content on the glass-forming ability and mechanical properties of Co–B–Ta glassy alloys, Journal of Alloys and Compounds, Volume 617, 25 December 2014
  • Binhua Chu, Da Li, Kuo Bao, Fubo Tian, Defang Duan, Xiaojing Sha, Pugeng Hou, Yunxian Liu, Huadi Zhang, Bingbing Liu, Tian Cui, Ultrahard boron-rich tantalum boride: Monoclinic TaB4, Journal of Alloys and Compounds, Volume 617, 25 December 2014
  • Shengkui Zhong, Lihua Zhou, Ling Wu, Lianfeng Tang, Qiyi He, Jalal Ahmed, Nitrogen- and boron-co-doped core–shell carbon nanoparticles as efficient metal-free catalysts for oxygen reduction reactions in microbial fuel cells, Journal of Power Sources, Volume 272, 25 December 2014
  • Ling Li, Xichuan Yang, Wenming Zhang, Huayan Zhang, Xiaowei Li, Boron and sulfur co-doped TiO2 nanofilm as effective photoanode for high efficiency CdS quantum-dot-sensitized solar cells, Journal of Power Sources, Volume 272, 25 December 2014