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

  • Zhijie Wu, Xikang Mao, Qin Zi, Rongrong Zhang, Tao Dou, Alex C.K. Yip, Mechanism and kinetics of sodium borohydride hydrolysis over crystalline nickel and nickel boride and amorphous nickel–boron nanoparticles, Journal of Power Sources, Volume 268, 5 December 2014
  • Ning Zhang, Huan Liu, Hongmin Kan, Xiaoyang Wang, Haibo Long, Yonghui Zhou, The preparation of high-adsorption, spherical, hexagonal boron nitride by template method, Journal of Alloys and Compounds, Volume 613, 15 November 2014
  • Yikun Zhang, Baijun Yang, Effect of Fe substitution on magnetocaloric effect in metamagnetic boron-carbide ErNi2-xFexB2C compounds, Journal of Alloys and Compounds, Volume 610, 15 October 2014
  • Elena V. Fedorenko, Anatoliy G. Mirochnik, Anton Yu. Beloliptsev, Vladimir V. Isakov, (S2?S0) and (S1?S0) luminescence of dimethylaminostyryl-ß-diketonates of boron difluoride, Dyes and Pigments, Volume 109, October 2014
  • Wenwen Cui, Jingming Shi, Hanyu Liu, Cheng Lu, Hui Wang, Novel high-pressure crystal structures of boron trifluoride, Journal of Physics and Chemistry of Solids, Volume 75, Issue 10, October 2014
  • Joseph W. McGrady, Dimitrios A. Papaconstantopoulos, Michael J. Mehl, Tight-Binding study of Boron structures, Journal of Physics and Chemistry of Solids, Volume 75, Issue 10, October 2014
  • Lingling Zhang, Yulin Ma, Xinqun Cheng, Pengjian Zuo, Yingzhi Cui, Ting Guan, Chunyu Du, Yunzhi Gao, Geping Yin, Enhancement of high voltage cycling performance and thermal stability of LiNi1/3Co1/3Mn1/3O2 cathode by use of boron-based additives, Solid State Ionics, Volume 263, 1 October 2014
  • Manuel Palencia, Myleidi Vera, Bernabé L. Rivas, Modification of ultrafiltration membranes via interpenetrating polymer networks for removal of boron from aqueous solution, Journal of Membrane Science, Volume 466, 15 September 2014
  • A.G. Van Der Geest, A.N. Kolmogorov, Stability of 41 metal–boron systems at 0 GPa and 30 GPa from first principles, Calphad, Volume 46, September 2014
  • Weon Gyu Shin, Hye Jin Jung, Hong Gye Sung, Hyung Soo Hyun, Youngku Sohn, Synergic CO oxidation activities of boron–CeO2 hybrid materials prepared by dry and wet milling methods, Ceramics International, Volume 40, Issue 8, Part A, September 2014
  • D. McNamara, D. Carolan, P. Alveen, N. Murphy, A. Ivankovic, The influence of microstructure on the fracture statistics of polycrystalline diamond and polycrystalline cubic boron nitride, Ceramics International, Volume 40, Issue 8, Part A, September 2014
  • Chuan Sun, Yunkai Li, Yunfei Wang, Lingbo Zhu, Quanzhen Jiang, Yong Miao, Xuebing Chen, Effect of alumina addition on the densification of boron carbide ceramics prepared by spark plasma sintering technique, Ceramics International, Volume 40, Issue 8, Part B, September 2014
  • W.J. Kelvin Chew, M. Amiriyan, A. Yaghoubi, S. Ramesh, J. Purbolaksono, R. Tolouei, W.D. Teng, D.K. Agrawal, Sintering properties and thermal depletion of boron in zirconia–zirconium diboride conductive ceramic, Ceramics International, Volume 40, Issue 8, Part B, September 2014
  • Yuzheng Wang, Xiangxin Xue, He Yang, Preparation and characterization of carbon or/and boron-doped titania nano-materials with antibacterial activity, Ceramics International, Volume 40, Issue 8, Part A, September 2014
  • Mehdi D. Esrafili, Roghaye Nurazar, Potential of C-doped boron nitride fullerene as a catalyst for methanol dehydrogenation, Computational Materials Science, Volume 92, September 2014
  • Poonam Verma, Shiny S. Kumar, R.M. Sawant, B.S. Tomar, K.L. Ramakumar, Synchronous derivative fluorimetric determination of boron in Uranium fuel samples, Journal of Luminescence, Volume 153, September 2014
  • Zs. Rák, C.J. O’Brien, D.W. Brenner, First-principles investigation of boron defects in nickel ferrite spinel, Journal of Nuclear Materials, Volume 452, Issues 1–3, September 2014
  • Glen A. Slack, Kenneth E. Morgan, Some crystallography, chemistry, physics, and thermodynamics of B12O2, B12P2, B12As2, and related alpha-boron type crystals, Journal of Physics and Chemistry of Solids, Volume 75, Issue 9, September 2014
  • Yinsheng Li, Jie Yin, Haibo Wu, Ping Lu, Yongjie Yan, Xuejian Liu, Zhengren Huang, Dongliang Jiang, High thermal conductivity in pressureless densified SiC ceramics with ultra-low contents of additives derived from novel boron–carbon sources, Journal of the European Ceramic Society, Volume 34, Issue 10, September 2014
  • Qiwei Qiao, Rijie Wang, Minglei Gou, Xiaoxia Yang, Catalytic performance of boron and aluminium incorporated ZSM-5 zeolites for isomerization of styrene oxide to phenylacetaldehyde, Microporous and Mesoporous Materials, Volume 195, 1 September 2014