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Boron nitride

Boron nitride
Boron nitride structure
CAS No.
10043-11-5
Chemical Name:
Boron nitride
Synonyms
BN C;BNC1;elbor;shobn;BN F15;BN B50;BN A01;bzn550;elborr;uhp-ex
CBNumber:
CB9266197
Molecular Formula:
BN
Formula Weight:
24.82
MOL File:
10043-11-5.mol

Boron nitride Properties

Melting point:
2700℃
Boiling point:
sublimes sl below 3000℃ [MER06]
Density 
2.29
storage temp. 
-20°C
form 
Powder
color 
White
Specific Gravity
3.48
PH
5-8 (100g/l, H2O, 20℃)(slurry)
Water Solubility 
Soluble in water (slightly soluble) at 20°C, and water (soluble) at 95°C.
Sensitive 
Hygroscopic
Merck 
14,1346
Stability:
Stable. Incompatible with oxidizing agents, water.
CAS DataBase Reference
10043-11-5(CAS DataBase Reference)
NIST Chemistry Reference
Boron nitride(10043-11-5)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  36/37
Safety Statements  26-36
RIDADR  UN1950
WGK Germany  3
RTECS  ED7800000
TSCA  Yes
HS Code  2850 00 20
HazardClass  2.1
Toxicity LD50 orally in Rabbit: > 2000 mg/kg LD50 dermal Rat > 2000 mg/kg
Symbol(GHS):
Signal word:
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H222 Extremely flammable aerosol Flammable aerosols Category 1 Danger P210, P211, P251, P410+P412
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H333 May be harmful if inhaled Acute toxicity,inhalation Category 5 P304+P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P251 Pressurized container: Do not pierce or burn, even after use.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P405 Store locked up.
P410+P412 Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF.

Boron nitride price More Price(48)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 255475 Boron nitride powder, ~1 μm, 98% 10043-11-5 50g $123 2018-11-13 Buy
Sigma-Aldrich 255475 Boron nitride powder, ~1 μm, 98% 10043-11-5 250g $453 2018-11-13 Buy
Alfa Aesar 011078 Boron nitride, 99.5% (metals basis) 10043-11-5 50g $74.4 2018-11-16 Buy
Alfa Aesar 011078 Boron nitride, 99.5% (metals basis) 10043-11-5 250g $277 2018-11-16 Buy
Strem Chemicals 05-0125 Boron nitride, hexagonal crystalline solid, min. 99% 10043-11-5 50g $50 2018-11-13 Buy

Boron nitride Chemical Properties,Uses,Production

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.

Chemical Properties

white powder(s), 1μm or less 99.5% pure; hexagonal, most common form: a=0.2504 nm, c=0.6661nm; fcc: a=0.3615nm; hardness: hexagonal like graphite,?cub approaches that of diamond; band gap ~7.5 eV at 300K; dielectric 7.1; used in furnace insulation and in crucibles for melting aluminum, boron, iron, and silicon, also as sputtering target for dielectrics, diffusion masks, passivation layers [KIR81] [HAW93] [MER06] [CER91]

Uses

boron nitride is a synthetically manufactured white, talc-like powder that can reflect light, giving a product a sparkle effect. It is Copyright 2014 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial Review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. 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.

Definition

boron nitride: A solid, BN, insolublein cold water and slowly decomposedby hot water; r.d. 2.25 (hexagonal);sublimes above 3000°C. Boronnitride is manufactured by heatingboron oxide to 800°C on an acid-solublecarrier, such as calcium phosphate,in the presence of nitrogen orammonia. It is isoelectronic with carbonand, like carbon, it has a veryhard cubic form (borazon) and asofter hexagonal form; unlikegraphite this is a nonconductor. It isused in the electrical industrieswhere its high thermal conductivityand high resistance are of especialvalue.

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.

Industrial uses

Boron nitride (BN) has many potential commercial applications. It is a white, fluffy powder with a greasy feel. It is used for heat-resistant parts by molding and pressing the powder without a binder to a specific gravity of 2.1 to 2.25.
BN may be prepared in a variety of ways, for example, by the reaction of boron oxide with ammonia, alkali cyanides, and ammonium chloride, or of boron halides and ammonia. The usually high chemical and thermal stability, combined with the high electrical resistance of BN, suggests numerous uses for this compound in the field of high-temperature technology. BN can be hot-pressed into molds and worked into desired shapes.
BN powders can be used as mold-release agents, high-temperature lubricants, and additives in oils, rubbers, and epoxies to improve thermal conductance of dielectric compounds. Powders also are used in metal- and ceramicmatrix composites (MMC and CMC) to improve thermal shock and to modify wetting characteristics.
The platy habit of the particles and the fact that boron nitride is not wet by glass favors use of the powder as a mold wash, e.g., in the fabrication of high-tension insulators. It is also useful as thermal insulation in induction heating. A cubic form of boron nitride (Borazon) similar to diamond in hardness and structure has been synthesized by the high-temperature, high-pressure process for making synthetic diamonds. Any uses it may find as a substitute for diamonds will depend on its greatly superior oxidation resistance.

Boron nitride Preparation Products And Raw materials

Raw materials

Preparation Products


Boron nitride Suppliers

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Mainchem Co., Ltd.
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Boron nitride Spectrum


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