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

  • Susumu Takahashi, Yusuke Imai, Akinori Kan, Yuji Hotta, Hirotaka Ogawa, Dielectric and thermal properties of isotactic polypropylene/hexagonal boron nitride composites for high-frequency applications, Journal of Alloys and Compounds, Volume 615, 5 December 2014
  • 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
  • Bin Li, Kun Liu, Chang-Rui Zhang, Si-Qing Wang, Fabrication and properties of borazine derived boron nitride bonded porous silicon aluminum oxynitride wave-transparent composite, Journal of the European Ceramic Society, Volume 34, Issue 15, 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
  • Pervaiz Ahmad, Mayeen Uddin Khandaker, Ziaul Raza Khan, Yusoff Mohd Amin, A simple technique to synthesize pure and highly crystalline boron nitride nanowires, Ceramics International, Volume 40, Issue 9, Part B, November 2014
  • Bahman Nasiri-Tabrizi, Reza Ebrahimi-Kahrizsangi, Mojtaba Bahrami-Karkevandi, Effect of excess boron oxide on the formation of tungsten boride nanocomposites by mechanically induced self-sustaining reaction, Ceramics International, Volume 40, Issue 9, Part A, November 2014
  • Tao Feng, He-Jun Li, Shao-Long Wang, Man-Hong Hu, Lei Liu, Boron modified multi-layer MoSi2–CrSi2–SiC–Si oxidation protective coating for carbon/carbon composites, Ceramics International, Volume 40, Issue 9, Part B, November 2014
  • E. Bernardo, I. Ponsot, P. Colombo, S. Grasso, H. Porwal, M.J. Reece, Polymer-derived SiC ceramics from polycarbosilane/boron mixtures densified by SPS, Ceramics International, Volume 40, Issue 9, Part A, November 2014
  • Paviter Singh, Bikramjeet Singh, Manjeet Kumar, Akshay Kumar, One step reduction of Boric Acid to boron carbide nanoparticles, Ceramics International, Volume 40, Issue 9, Part B, November 2014
  • K. Shrestha, V.C. Lopes, A.J. Syllaios, C.L. Littler, Raman spectroscopic investigation of boron doped hydrogenated amorphous silicon thin films, Journal of Non-Crystalline Solids, Volume 403, 1 November 2014
  • Peter Tatarko, Salvatore Grasso, Harshit Porwal, Zdenek Chlup, Richa Saggar, Ivo Dlouhý, Michael J. Reece, Boron nitride nanotubes as a reinforcement for brittle matrices, Journal of the European Ceramic Society, Volume 34, Issue 14, November 2014
  • Jing Zhou, Baoyu Wang, Mingdong Huang, Two constitutive descriptions of boron steel 22MnB5 at high temperature, Materials & Design, Volume 63, November 2014
  • Xiang Li, Qifang Li, Guang-Xin Chen, Alkali metal surfactant-facilitated formation of thick boron nitride layers on carbon nanotubes by dip-coating, Materials Letters, Volume 134, 1 November 2014
  • Jing-He Yang, Qingtao Yu, Yamin Li, Liqun Mao, Ding Ma, Batch fabrication of mesoporous boron-doped nickel oxide nanoflowers for electrochemical capacitors, Materials Research Bulletin, Volume 59, November 2014
  • Tong Zhao, Jianhao Shi, Meng Huo, Rundong Wan, Electronic properties of C-doped boron nitride nanotubes studied by first-principles calculations, Physica E: Low-dimensional Systems and Nanostructures, Volume 64, November 2014
  • Raad Chegel, Somayeh Behzad, Theoretical study of the influence of the electric field on the electronic properties of armchair boron nitride nanoribbon, Physica E: Low-dimensional Systems and Nanostructures, Volume 64, 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
  • A. El Abd, Determination of boron in water using neutron scattering and transmission, and prompt gamma ray neutron activation analysis methods: A comparative study, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 337, 15 October 2014
  • Takeshi Kondo, Yasutaka Kodama, Satoshi Ikezoe, Keita Yajima, Tatsuo Aikawa, Makoto Yuasa, Porous boron-doped diamond electrodes fabricated via two-step thermal treatment, Carbon, Volume 77, 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