CALCIUM BORIDE

Base Information

• Chemical Name: CALCIUM BORIDE
• CAS No.: 12007-99-7
• Molecular Formula: B₆Ca
• Molecular Weight: 104.944
• Mol file: 12007-99-7.mol

Synonyms:Calciumboride (CaB6) (6CI,8CI);Calcium hexaboride;

Chemical Property of CALCIUM BORIDE

Chemical Property:

• Appearance/Colour: metallic luster dark gray powder
• Melting Point: 2235 °C
• PSA: 0.00000
• Density: 2.3 g/mL at 25 °C(lit.)
• LogP: -2.28480
• Water Solubility.: Insoluble in water. Dissolves slowly in acids

Purity/Quality:

99.9% ^*data from raw suppliers

Calcium hexaboride 200mesh, 99.5% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36

MSDS Files:

SDS file from LookChem

Useful:

• Description: Typical samples of CaB6 are nonstoichiometric, i.e. the ratio of boron to calcium is not exactly 6:1, for example the ultra-fine powders of CaB6 produced by some researchers had B:Ca ratio of 5.91:1. It is an important material due to its high electrical conductivity, hardness, chemical stability, and melting point.
• Physical properties: Calcium boride is a black, lustrous, chemically inert powder with a low density. Calcium hexaboride is insoluble in H2O, MeOH (methanol), and EtOH (ethanol) and dissolves slowly in acids. It has the cubic structure typical for metal hexaborides, with octahedral units of six boron atoms combined with calcium atoms.
• Uses: Carbon hexaboride is used in the manufacturing of boron-alloyed steel. Also, calcium hexaboride is used as a deoxidation agent in production of oxygen-free copper, which results in higher conductivity than conventionally phosphorus-deoxidized copper owing to the low solubility of boron in copper. Also, it can serve as a high temperature material, surface protection, abrasives, tools, and wear-resistant material. Calcium boride is used as an electrode (cathode) material and n-type thermoelectric materials. It is used to make boron- alloyed steel, as a deoxidation agent in the production of oxygen-free copper. It is further used as an antioxidant in carbon bonded refractories. It acts as a new material which is used in the nuclear-industry for neutron- preventing, high-purity metal borid (TiB2,ZrB2,HfB2) and high-purity boron alloy(Ni-B, Co-B, Cu-b).

Technology Process of CALCIUM BORIDE

There total 46 articles about CALCIUM BORIDE which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

calcium borohydride → calcium hydride (7789-78-8) + calcium hexaboride (12007-99-7) + hydrogen (1333-74-0)

Guidance literature:

In neat (no solvent); hydrogen released at temp. 350-390°C; XRD, TGA;

DOI:10.1021/jp0764541

Reference yield:

calcium borohydride → boron + calcium hydride (7789-78-8) + calcium hexaboride (12007-99-7) + hydrogen (1333-74-0)

Guidance literature:

In solid; heating to 770 K under vac.; detd. by XRD;

DOI:10.1016/j.jallcom.2007.07.097

Reference yield:

calcium borohydride → calcium hydride (7789-78-8) + calcium hexaboride (12007-99-7)

Guidance literature:

In neat (no solvent, solid phase); byproducts: H2; Ca(BH4)2 was heated;

DOI:10.1039/c0dt00294a

upstream raw materials:

calcium hydride

calcium chloride

calcium

calcium(II) ion

Refernces

• 1、 Aono,Kawai. "11B NUCLEAR QUADRUPOLE INTERACTION IN METAL HEXABORIDES (MB6).". . p. 797 - 802. Retrieved 1979.
• 2、 Sevast'yanova,Kazin,Kravchenko,Kuz'michev,Ponomarev,Burdina,Bulychev. "On the existence of solid solutions based on magnesium diboride". . p. 1674 - 1680. Retrieved 2003.
• 3、 Takeda, Masatoshi,Terui, Manabu,Takahashi, Norihito,Ueda, Noriyoshi. "Improvement of thermoelectric properties of alkaline-earth hexaborides". . p. 2823 - 2826. Retrieved 2006.
• 4、 Kim, Jae-Hun,Jin, Seon-Ah,Shim, Jae-Hyeok,Cho, Young Whan. "Thermal decomposition behavior of calcium borohydride Ca(BH4)2". . p. L20-L22. Retrieved 2008.
• 5、 Ogita, Norio,Nagai, Shinji,Okamoto, Naoki,Iga, Fumitoshi,Kunii, Satoru,Akamtsu, Toshiro,Akimitsu, Jun,Udagawa, Masayuki. "Raman scattering study of CaB6 and YbB6". . p. 461 - 465. Retrieved 2004.
• 6、 Stavila, Vitalie,Her, Jae-Hyuk,Zhou, Wei,Hwang, Son-Jong,Kim, Chul,Ottley, Leigh Anna M.,Udovic, Terrence J.. "Probing the structure, stability and hydrogen storage properties of calcium dodecahydro-closo-dodecaborate". . p. 1133 - 1140. Retrieved 2010.
• 7、 Paschen,Pushin,Schlatter,Vonlanthen,Ott,Young,Fisk. "Electronic transport in Eu1-xCaxB6". . p. 4174 - 4180. Retrieved 2000.
• 8、 Moriwaka, Tomoaki,Nishioka, Takashi,Sato, Noriaki K.. "Ferromagnetism induced by Ca vacancy in CaB6". . p. 341 - 344. Retrieved 2001.
• 9、 Shi, Liang,Gu, Yunle,Chen, Luyang,Yang, Zeheng,Ma, Jianhua,Qian, Yitai. "Low Temperature Synthesis and Characterization of Cubic CaB6 Ultrafine Powders". . p. 958 - 959. Retrieved 2003.
• 10、 Cao, Minghe,Jiang, Jun,Liu, Hanxing,Yuan, Jun. "The nature of Fe impurity phase in ferromagnetic CaB6". . p. 150 - 156. Retrieved 2005.