What is Boron Nitride Powder CAS 10043-11-5?

Boron Nitride Powder is an inorganic boron-nitrogen compound with molecular formula BN, molecular weight 24.82, and EC number 233-136-6. It is also called boron mononitride or h-BN, and is normally supplied as a white or off-white industrial or ceramic-grade powder.

What is the difference between hexagonal and cubic boron nitride?

Hexagonal boron nitride has a graphite-like layered structure and is commonly chosen for thermal conductivity, electrical insulation, lubrication, release, and protective coating applications. Cubic boron nitride has a different crystal structure, higher density of about 3.45 g/cm3, and is more relevant to abrasive or specialty ceramic uses.

What are the main industrial applications of Boron Nitride Powder?

It is used in thermal-management fillers and electrically insulating composites, ceramic and refractory processing, high-temperature solid lubrication, protective coatings, and polymer or rubber modification. Hexagonal boron nitride is usually the relevant form for these thermal, insulating, lubricant, and release uses.

Which specifications should be checked for thermal-management or ceramic-grade BN powder?

Confirm crystal phase, purity or BN content, oxygen or B2O3 content, particle size distribution, specific surface area, tap density, and any surface treatment. Thermal conductivity and electrical resistivity may also be relevant for electronic, thermal-interface, or insulating formulations.

How should Boron Nitride Powder be stored and handled?

Store it in tightly closed, moisture-protective packaging in a dry, cool, well-ventilated area. Avoid unnecessary dust formation, moisture pickup, and contact with strong oxidizers, and confirm the offered package, net weight, lot traceability, and transport requirements before dispatch.

Boron Nitride Powder CAS 10043-11-5

Boron Nitride Powder is an inorganic boron-nitrogen compound with the molecular formula BN. It is supplied as a specialty powder material for industrial systems where thermal stability, electrical insulation, lubricity, or ceramic-related performance may be required, depending on grade and application requirements.

CAS: 10043-11-5
Synonyms: Boron nitride; BN; Hexagonal boron nitride*; Boron nitride powder
Einecs: 233-136-6
Molecular Formula: BN
Grade: Industrial grade; Ceramic grade; Customized according to application requirements
Package: Standard packaging; packed in bags / drums / cartons as applicable; customized packaging available upon request

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Product Description

1 Reference Information

2 Applications

3 Packaging and Storage

Reference Information

Item	Reference
Molecular Formula	BN
Molecular Weight	24.82
EC Number	233-136-6
General Physical Description	Inorganic boron-nitrogen compound supplied in powder form
Structural Notes	Commercial boron nitride may be associated with different crystal forms; grade confirmation is recommended for application matching

The molecular formula BN and molecular weight 24.82 are listed by major chemical references for boron nitride under CAS 10043-11-5.

Applications

Typical industrial application directions may include:

Thermal management fillers and insulating systems, depending on particle size, morphology, and formulation compatibility.
Ceramic and refractory processing, where boron nitride powder is used as a functional inorganic material.
Lubrication or release-related systems, especially where high-temperature stability is relevant to the process route.
Polymer, rubber, or composite modification systems, where thermal conductivity or electrical insulation balance is part of formulation design.
Specialty industrial formulations, subject to grade confirmation, purity requirements, and application validation.

These application directions should be understood as typical industrial use areas rather than fixed end-use claims. Final suitability depends on the offered grade, powder characteristics, and the user’s process conditions. Evidence from supplier and reference materials shows boron nitride powder is used in ceramic, composite, thermal, and related materials contexts, but exact performance depends on the specific form supplied.

For high-temperature dry-film or boundary-lubrication systems using a layered sulfide, Molybdenum Disulfide is a separate solid-lubricant material to evaluate.

Packaging and Storage

Standard packaging is available for boron nitride powder. It may be packed in bags, drums, or cartons as applicable to the offered grade and supply arrangement. Customized packaging may be discussed upon request.

For storage, the material should generally be kept in a dry, well-closed container and protected from unnecessary moisture and contamination during handling. Storage conditions may be further adjusted according to the offered grade, packaging format, and downstream processing requirements.

FAQ - Technical & Supply Chain

Q:
What is Boron Nitride Powder CAS 10043-11-5?

A: Boron Nitride Powder is an inorganic boron-nitrogen compound with molecular formula BN, molecular weight 24.82, and EC number 233-136-6. It is also called boron mononitride or h-BN, and is normally supplied as a white or off-white industrial or ceramic-grade powder.
Q:
What is the difference between hexagonal and cubic boron nitride?

A: Hexagonal boron nitride has a graphite-like layered structure and is commonly chosen for thermal conductivity, electrical insulation, lubrication, release, and protective coating applications. Cubic boron nitride has a different crystal structure, higher density of about 3.45 g/cm3, and is more relevant to abrasive or specialty ceramic uses.
Q:
What are the main industrial applications of Boron Nitride Powder?

A: It is used in thermal-management fillers and electrically insulating composites, ceramic and refractory processing, high-temperature solid lubrication, protective coatings, and polymer or rubber modification. Hexagonal boron nitride is usually the relevant form for these thermal, insulating, lubricant, and release uses.
Q:
Which specifications should be checked for thermal-management or ceramic-grade BN powder?

A: Confirm crystal phase, purity or BN content, oxygen or B2O3 content, particle size distribution, specific surface area, tap density, and any surface treatment. Thermal conductivity and electrical resistivity may also be relevant for electronic, thermal-interface, or insulating formulations.
Q:
How should Boron Nitride Powder be stored and handled?

A: Store it in tightly closed, moisture-protective packaging in a dry, cool, well-ventilated area. Avoid unnecessary dust formation, moisture pickup, and contact with strong oxidizers, and confirm the offered package, net weight, lot traceability, and transport requirements before dispatch.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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