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BN1508 Boron Nitride Powder, BN Powder

Name: BN1508 Boron Nitride Powder, BN Powder
Brand: Advanced Ceramic Materials
SKU: BN1508
Availability: InStock
Rating: 4.9 (166 reviews)

Catalog No. BN1508
Molecular Formula BN
CAS Number 10043-11-5
Appearance White powder
Melting Point 2973 °C (sublimes)
Density h-BN: 2.1 g/cm³; c-BN: 3.45 g/cm³
Thermal Conductivity 30-50 W/m·K (depending on orientation)
Electrical Resistivity >10¹⁴ Ω·cm
Solubility Insoluble in water

Datasheet

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BN1508 Boron Nitride Powder, BN Powder

Description

Boron nitride powder (also known as white graphite) is a high-performance advanced ceramic material prized for its unique combination of thermal conductivity, electrical insulation, and high-temperature lubricity. Unlike graphite, which is electrically conductive, boron nitride maintains excellent insulation properties while withstanding temperatures up to 900°C in air and over 2000°C in inert atmospheres.

Available in purities of 98% and 99%, our BN powder is suitable for applications ranging from cosmetic fillers to aerospace lubricants and thermally conductive electronic encapsulants.

Key Properties

High Thermal Conductivity – Boron nitride powder exhibits thermal conductivity comparable to some metals (30-50 W/m·K), making it an effective filler for heat management materials, while remaining electrically insulating.

Exceptional High-Temperature Stability – Unlike many lubricants that degrade above 300°C, boron nitride maintains its lubricating properties up to 900°C in oxidizing environments and well beyond in inert or reducing atmospheres.

Electrical Insulation – With volume resistivity exceeding 10¹⁴ Ω·cm, BN powder provides excellent dielectric properties, making it ideal for electronic packaging and insulation applications.

Chemical Inertness – Boron nitride resists attack by most chemicals, molten metals, and glasses. It is non-wetting and non-reactive, even at elevated temperatures.

Low Friction – The hexagonal crystal structure of h-BN gives it a low coefficient of friction, similar to graphite, but with the added benefit of electrical insulation and oxidation resistance.

Specifications

Molecular Formula	BN
Molecular Weight	24.82 g/mol
Appearance	Pure white
Melting Point	2973 °C
Density	h-BN: 2.1 g/cm³; c-BN: 3.45 g/cm³
Solubility in Water	Insoluble
Refractive Index	h-BN: 1.8; c-BN: 2.1
Electrical Resistivity	>10¹⁴ Ω·cm
CAS Number	10043-11-5
Form	Powder

Product Variants

Item No.	Description	Purity	Particle Size	Lot Size
NI05-98	Boron Nitride Powder	>98% BN	3 µm (D50), 200 mesh	100 kg, 1000 kg, Customize
NI05-99	High Purity Boron Nitride Powder	>99% BN	3 µm (D50), 325 mesh	100 kg, 1000 kg, Customize

Other particle sizes and purity grades available upon request.

Applications

Thermal Management – Thermally conductive fillers for polymers, greases, and electronic encapsulants
High-Temperature Lubricants – Metal forming, glass mold release, aerospace lubricants, anti-seize compounds
Advanced Ceramics – Feedstock for BN ceramic parts, composites, crucibles, and insulators
Cosmetics – Smooth texture enhancer in powders, foundations, and personal care products
Release Agents – Non-stick coatings for metal and glass molds, composite part manufacturing
Research & Development – Quantum dot synthesis, 2D material exfoliation, advanced ceramics research

Particle Size & Grade Selection Guide

Application	Recommended Grade	Typical Particle Size
Thermally conductive fillers	>99%	3-10 µm (for optimal loading)
Lubricants & release agents	>98%	1-5 µm or 200 mesh
Cosmetic formulations	>99%	Fine (<5 µm) for smooth feel
Ceramic manufacturing	>98%	3-10 µm or custom
Research applications	>99%	Various, inquire

For applications requiring very fine particles or specific size distributions, we can customize the powder to meet your requirements.

Packaging

Package Type	Quantity
Laboratory pack	1 kg bag
Small bulk	5 kg bag
Standard bulk	25 kg drum
Large bulk	500 kg super sack

Custom packaging available upon request. All products are handled in clean conditions to prevent contamination.

Advanced Ceramic Materials (ACM): Your trusted supplier of high-purity boron nitride powders, offering competitive pricing and certified quality.

Frequently Asked Questions (FAQs)

Q: What is the difference between h-BN and c-BN?
A: Hexagonal boron nitride (h-BN) has a layered structure similar to graphite, making it soft and lubricious. It's the most common form for powders. Cubic boron nitride (c-BN) has a diamond-like structure, is extremely hard, and is typically used in abrasive and cutting tool applications. Our standard BN1508 series is h-BN.

Q: What is the maximum operating temperature for boron nitride powder?
A: In oxidizing atmospheres (air), boron nitride is stable up to approximately 900°C. In inert atmospheres or vacuum, it can withstand temperatures exceeding 2000°C.

Q: Is boron nitride powder electrically conductive like graphite?
A: No. Despite being called "white graphite," boron nitride is an excellent electrical insulator, with resistivity >10¹⁴ Ω·cm.

Q: Can boron nitride be used in water-based systems?
A: Boron nitride is hydrophobic and not soluble in water. For water-based formulations, appropriate surfactants or dispersion aids are typically required.

Q: What particle sizes are available?
A: Our standard offerings include 3 µm (325 mesh) and 200 mesh. We can also supply custom sizes ranging from submicron to coarse grades based on your requirements.

Q: Is boron nitride safe for cosmetic use?
A: Yes. Boron nitride is widely used in cosmetics and personal care products. It is inert, non-toxic, and provides a smooth, silky feel in formulations.

Q: Do you offer samples for evaluation?
A: Yes, sample quantities are available for testing and evaluation. Please contact us with your requirements.