Boron nitride

Base Information

• Chemical Name: Boron nitride
• CAS No.: 10043-11-5
• Deprecated CAS: 165390-92-1,54824-38-3,56939-87-8,58799-13-6,60569-72-4,69495-08-5,78666-05-4,69071-29-0,1361021-23-9,1361021-37-5,2226910-87-6,1361021-37-5,54824-38-3,56939-87-8,58799-13-6,60569-72-4,69071-29-0,69495-08-5,78666-05-4
• Molecular Formula: BN
• Molecular Weight: 30.8653
• Hs Code.: 2850 00 20
• European Community (EC) Number: 233-136-6
• DSSTox Substance ID: DTXSID5051498
• Nikkaji Number: J95.099H
• Wikipedia: Boron nitride
• Wikidata: Q410193
• RXCUI: 1363426
• Mol file: 10043-11-5.mol

Synonyms:boron nitride;elbor

Chemical Property of Boron nitride

Chemical Property:

• Appearance/Colour: white powder
• Melting Point: 2700oC (sublimes)
• Boiling Point: sublimes sl below 3000℃ [MER06]
• PSA: 23.79000
• Density: 2.29 g/cm³
• LogP: -0.90112
• Storage Temp.: -20°C
• Sensitive.: Hygroscopic
• Water Solubility.: Soluble in water (slightly soluble) at 20°C, and water (soluble) at 95°C.
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 0
• Exact Mass: 25.0123792
• Heavy Atom Count: 2
• Complexity: 10

Purity/Quality:

99.2% ^*data from raw suppliers

Boron nitride, hexagonal crystalline solid, min. 99% ^*data from reagent suppliers

Safty Information:

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

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metalloid Compounds (Boron)
• Canonical SMILES: B#N
• Description: Boron nitride is a material in which the extra electron of nitrogen (with respect to carbon) enables it to form structures that are isoelectronic with carbon allotropes.Boron nitride is an inorganic compound with a flat, hexagonal crystal similar to graphite, but with the carbon atoms replaced by boron and nitrogen atoms. The alternate boron and nitrogen atoms are linked to form interlocking hexagonal rings with three boron atoms and three nitrogen atoms, and the layers are held together by van der Waals forces. There is no boron-nitrogen bonding between the layers.The bond length is 1.466? and the interlayer spacing is 3.331 ?. A spherical form (with a hexagonal crystal structure) is also available.Boron nitride can also be in cubic form in which alternately linked boron and nitrogen atoms form a tetrahedral bond network, similar to carbon atoms in diamond.
• Physical properties: White powder, hexagonal graphite-like form or cubic crystal; cubic form similar to diamond in its crystal structure, and reverts to graphite form when heated above 1,700°C; density 2.18 g/cm3; melts at 2,975°C (under nitrogen pressure); sublimes at 2,500°C at atmospheric pressure; insoluble in water and acid; attacked by hot alkalies and fused alkali carbonates; not wetted by most molten metals or glasses.Cubic boron nitride (c-BN) does not exist in nature but it is a novel substance created by human. It is synthesized under high pressure and high temperature just like diamond counterpart and has the wurzite crystal structure. The tables below compare reference hardness and heat conductivity for a couple of abrasive materials. Apparently c-BN is excellent in these properties, second only to diamond, the highest. Substance Hardness VHN (Vickers) Heat Conductivity (W/(m.K)) diamond 8600 1000 - 2000 c-BN 5000 590 alumina 2300 6 tungsten carbide 1800 42 silicon carbide 800 85 titanium nitride 2100 7.4 titanium carbide 3000 5.2 www.tomeidiamond.co.jp
• Uses: Boron nitride is a material in which the extra electron of nitrogen (with respect to carbon) enables it to form structures that are isoelectronic with carbon allotropes. Also used in manufacture of alloys; in semiconductors, nuclear reactors, lubricants.Hexagonal boron nitride can be used as an electrical insulator; as thermocouple protection sheaths, crucibles and linings for reaction vessels; and as a coating for refractory molds used in glass forming and in superplastic forming of titanium. It can also be incorporated in ceramics, alloys, resins, plastics, and rubber to give them self-lubricating properties. Hexagonal boron nitride is used the formulation of coatings and paints for high temperature applications. It is also used as a substrate for semi-conductors, lens coatings, and transparent windows. https://www.cir-safety.org boron nitride is a synthetically manufactured white, talc-like powder that can reflect light, giving a product a sparkle effect. It is primarily used in color cosmetics to provide subtle shimmer; however, it can also be found in skin care formulations for enhancing product smoothness and slip. Boron nitride used in the manufacture of high-temperature equipment parts due to its excellent thermal and chemical stability. It is used as a lubricant and an additive to cosmetics, paints, dental cements and pencil leads. It is also used to provide self lubricating properties to ceramics, alloys, resins, plastics and rubbers. In addition to this, it has many industrial applications such as xerographic process, laser printers, oxygen sensors and proton conductors. Cubic boron nitride is used as an abrasive material.

Technology Process of Boron nitride

There total 251 articles about Boron nitride 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: 90.0%

2,4,6-triamino-s-triazine (108-78-1,25778-04-5,94977-27-2) + boric acid (11113-50-1,14635-83-7) → boron nitride (10043-11-5)

Guidance literature:

over 600°C in N2 atmosphere;

Reference yield: 65.0%

dicyandiamide (127099-85-8,780722-26-1) + ammonium chloride + boric acid (11113-50-1,14635-83-7) → boron nitride (10043-11-5)

Guidance literature:

In melt; 300-1000°C, 1 mole dicyandiamide, 2 mole NH4Cl, 2-4 mole H3BO3;

Reference yield: 1.0%

aluminum oxide (1333-84-2,1344-28-1) + aluminium diboride + nitrogen (7727-37-9) + aluminium (7429-90-5) → boron nitride (10043-11-5) + aluminium nitride + FeB49 + 2Al2O3*AlN

Guidance literature:

With Fe impurity; In neat (no solvent); AlB2 (contg. Al, Fe and Al2O3 impurities) powder pressed uniaxially at 60 MPa; nitrided with N2 (8 atm) at 1900°C for 1 h; detd. by X-ray diffraction; composite contg. AlN, BN, FeB49 (trace) and Al5O6N (trace) obtained;

upstream raw materials:

magnesium

aluminum oxide

nitrogen

aluminium

Downstream raw materials:

nitrogen(II) oxide

titanium diboride

boron trifluoride

boric acid

Refernces

• 1、 Tang, Chengchun,Bando, Yoshio,Sato, Tadao,Kurashima, Keiji. "A novel precursor for synthesis of pure boron nitride nanotubes". . p. 1290 - 1291. Retrieved 2002.
• 2、 Hu, Long,Li,Ding,Tang,Qi. "Insight into carbon nanotubes-template reaction at high temperature". . p. 271 - 276. Retrieved 2004.
• 3、 Choi, Hyun Chul,Bae, Seung Yong,Jang, Woo Sung,Park, Jeunghee,Song, Ha Jin,Shin, Hyun-Joon. "X-ray absorption near edge structure study of BN nanotubes and nanothorns". . p. 7007 - 7011. Retrieved 2005.
• 4、 Raina,Kulkarni,Rao. "Formation of B, Al, Ga, and Si nitrides from their oxides: A reactive laser ablation study". . p. 1271 - 1277. Retrieved 2004.
• 5、 Hanigofsky,More,Lackey,Lee,Freeman. "Composition and microstructure of chemically vapor-deposited boron nitride, aluminum nitride, and boron nitride + aluminum nitride composites". . p. 301 - 305. Retrieved 1991.
• 6、 Borowiak-Palen,Pichler,Fuentes,Bendjemil,Liu,Graff,Behr,Kalenczuk,Knupfer,Fink. "Infrared response of multiwalled boron nitride nanotubes". . p. 82 - 83. Retrieved 2003.
• 7、 Chen, Xi-Meng,Li, Huizhen,Yang, Qiu-Yu,Wang, Rui-Rui,Hamilton, Ewan J. M.,Zhang, Jie,Chen, Xuenian. "Br?nsted and Lewis Base Behavior of Sodium Amidotrihydridoborate (NaNH2BH3)". . p. 4541 - 4545. Retrieved 2017.
• 8、 O'Connor, T. E.. "". . p. 1753 - 1754. Retrieved 1962.
• 9、 Gomez-Aleixandre, Cristina,Diaz, Domingo,Orgaz, Felipe,Albella, Jose M.. "Reaction of Diborane and Ammonia Gas Mixtures in a Chemical Vapor Deposition Hot-Wall Reactor". . p. 11043 - 11046. Retrieved 1993.
• 10、 Paine, Robert T.,Koestle, Wolfgang,Borek, Theodore T.,Wood, Gary L.,Pruss, Eugene A.,Duesler, Eileen N.,Hiskey, Michael A.. "Synthesis, characterization, and explosive properties of the nitrogen-rich borazine [H3N3B3(N3)3]". . p. 3738 - 3743. Retrieved 1999.