What is Boron Nitride CAS 10043-11-5?

Boron Nitride CAS 10043-11-5 is a boron-nitrogen compound with the formula BN. Hexagonal boron nitride, or h-BN, has a graphite-like layered structure but is white and electrically insulating.

How does hexagonal Boron Nitride compare with graphite?

Both have layered structures and good lubricity, but h-BN is an electrical insulator while graphite conducts electricity. h-BN is also white, which makes it useful in cosmetics and light-colored materials where graphite would be unacceptable.

What cosmetic benefits does Boron Nitride provide?

Cosmetic-grade Boron Nitride is used as a slip agent, mattifier, and oil absorber in pressed and loose powders, foundations, and creams. It improves spreadability and gives a soft, silky feel.

What electronic and thermal applications use Boron Nitride?

Because it combines high thermal conductivity with high electrical resistance, h-BN is used in thermal interface fillers, thermally conductive plastics and rubbers, high-temperature insulation, and release or mold-wash applications.

What grade and particle-size factors should buyers check?

Key factors include BN purity, free boron oxide content, particle-size distribution, tap density, and application-specific grade. Cosmetic, electronic, and industrial grades may prioritize different combinations of these properties.

Boron Nitride CAS 10043-11-5

Boron Nitride (CAS 10043-11-5) is an advanced synthetic ceramic material utilizing its hexagonal crystal structure to provide exceptional thermal conductivity and electrical insulation. Chemically identified as Hexagonal Boron Nitride (h-BN) or "White Graphite," this soft, white powder functions as a superior high-temperature lubricant and a thermally conductive filler in electronic thermal management materials. As a chemically inert Inorganic nitride, it is extensively integrated into cosmetic formulations for its silky texture ("soft focus" effect) and into metallurgy as a mold release agent where graphite would react. We ensure bulk supply capabilities for this material, providing access to competitive factory pricing and customized specifications to meet specific particle sizes (e.g., 1-2 microns for cosmetics, 10-30 microns for thermal fillers). Full technical documentation, including MSDS, TDS, COA, is available to support compliance and safety protocols.

CAS: 10043-11-5
Synonyms: Hexagonal Boron Nitride, h-BN, White Graphite, Boron mononitride, BN powder
Einecs: 233-136-6
Molecular Formula: BN
Grade: Industrial Grade / Cosmetic Grade / Electronic Grade
Package: 10kg/20kg Fiber Drum or Carton box with inner PE bags

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Product Description

Hexagonal Boron Nitride (h-BN) is a advanced ceramic material that combines the properties of high thermal conductivity, high electrical resistance, and excellent lubricity. Unlike graphite, it is white and an electrical insulator.

Our Boron Nitride powder is chemically inert, non-toxic, and stable at high temperatures (up to 900°C in air and 2000°C in inert atmosphere). It is widely used as a solid lubricant, a release agent for metal casting, and a thermal conductive filler in electronic materials. Our factory offers various particle sizes (D50 from 1μm to 30μm) to suit different application needs.

1 Physicochemical Properties

2 Applications

3 Storage Conditions

4 Safety Precautions

Physicochemical Properties

The following specifications reflect our standard High-Purity h-BN export grade:

Property	Specification / Value
Appearance	Pure White Fluffy Powder
Crystal Structure	Hexagonal (Graphite-like)
Purity (BN Content)	≥ 98.0% – 99.5%
Free Boron Oxide (B2O3)	≤ 0.5% (Low moisture absorption)
Particle Size (D50)	Customizable: 1-2μm, 3-5μm, 10-15μm, ~30μm
Tap Density	0.2 – 0.5 g/cm³ (Depending on particle size)
True Density	~2.27 g/cm³
Melting Point	~3000°C (Sublimates)
Thermal Conductivity	High (Used for heat dissipation)
Electrical Resistivity	> 10^14 Ω·cm (Excellent Insulator)
Solubility	Insoluble in water, acid, and ethanol

Applications

Boron Nitride is a critical material in advanced manufacturing and cosmetics:

High-Temperature Lubricants: Used as an additive in greases and oils for extreme pressure and high-heat environments.
Mold Release Agent: Applied in metal casting (aluminum, magnesium, zinc) and glass molding to prevent sticking.
Cosmetics: Used in makeup (foundation, lipstick) as a slip agent to provide a silky texture and high opacity (“soft focus” effect).
Thermal Management: Used as a thermally conductive but electrically insulating filler in thermal pads, silicone sheets, and epoxy resins for electronics.
Ceramics: Sintered to produce evaporation boats and ceramic parts for semiconductor processing.
Coatings: Used in anti-corrosion and anti-stick coatings for industrial machinery.

Storage Conditions

Moisture Control: Although our product has low B2O3, Boron Nitride can slightly absorb moisture over time. Store in a strictly dry environment.
Sealing: Keep container tightly sealed immediately after use.
Temperature: Store in a cool, well-ventilated warehouse away from direct sunlight.
Stacking: Do not stack too high to prevent package damage.

Safety Precautions

Inhalation: Boron Nitride is considered a “nuisance dust.” Avoid breathing dust. Use a NIOSH-approved dust mask or respirator during handling, especially when transferring powder.
Ventilation: Ensure adequate local exhaust ventilation in the working area.
Skin & Eyes: It is generally non-irritating, but mechanical irritation from powder is possible. Wear safety goggles and gloves.
Fire: The product is non-combustible and fire-retardant.

FAQ - Technical & Supply Chain

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

A: Boron Nitride CAS 10043-11-5 is a boron-nitrogen compound with the formula BN. Hexagonal boron nitride, or h-BN, has a graphite-like layered structure but is white and electrically insulating.
Q:
How does hexagonal Boron Nitride compare with graphite?

A: Both have layered structures and good lubricity, but h-BN is an electrical insulator while graphite conducts electricity. h-BN is also white, which makes it useful in cosmetics and light-colored materials where graphite would be unacceptable.
Q:
What cosmetic benefits does Boron Nitride provide?

A: Cosmetic-grade Boron Nitride is used as a slip agent, mattifier, and oil absorber in pressed and loose powders, foundations, and creams. It improves spreadability and gives a soft, silky feel.
Q:
What electronic and thermal applications use Boron Nitride?

A: Because it combines high thermal conductivity with high electrical resistance, h-BN is used in thermal interface fillers, thermally conductive plastics and rubbers, high-temperature insulation, and release or mold-wash applications.
Q:
What grade and particle-size factors should buyers check?

A: Key factors include BN purity, free boron oxide content, particle-size distribution, tap density, and application-specific grade. Cosmetic, electronic, and industrial grades may prioritize different combinations of these properties.

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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