THex-Boron Nitride (hBN) Powder

Hex-Boron Nitride (hBN) Powder

Hexagonal or Hex-Boron Nitride (hBN) is also known as ‘White Graphite'. It has a similar (hexagonal) crystal structure to Graphite. This crystal structure provides excellent lubricating properties. hBN is far superior to Graphite and has the following characteristics:

  • Excellent Lubricating Properties due to low Coefficient of Friction at 0.15 to 0.70
  • Good Chemical Inertness
  • Electrical Insulator
  • Thermal Conductor (result: better heat dissipation)
  • High Temperature Stability, 1000o C in Air, 1400o C in Vacuum and 1800o C in Inert gas
  • Low Thermal Expansion
  • Low Dielectric Constant
  • High Load bearing properties
  • Non-Wetting: hBN is not wetted by Glasses, Salts and (most) metals, therefore it provides strong resistance to chemical attack
  • Easy Machinability (in hot pressed state). Complex shapes can be machined from hot pressed structure.

hBN powders are available in following particle sizes: 70 nm, 150 nm, 0.5 micron, 1.5 micron, 5 microns to 30 microns

Property Name Hex-Boron Nitride (hBN)
(CAS No: 10043-11-5)
Chemical Formula BN
Crystal Structure Hexagonal
Density (gm/cm3) 2.3
Melting Point 3000ºC Dissociates
Coefficient of Friction (COF) 0.15 to 0.70
Dielectric Constant (MHz) 4
Dielectric Breakdown Strength 35 KV/mm
Youngs Modulus (MPa) 20-102
Thermal Expansion Coefficient
@ 25ºC-1000ºC
1 x 10-6/ºC
(Parallel to press dir.)
4 x 10-6/ºC
(Perpendicular to press dir.)
Thermal Conductivity
(at 293 K, directional average)
0.08 cal/ cm.sec.K
Temperature Stability 1000ºC in Air
1400ºC in Vacuum
1800ºC in Inert atmosphere
Material Safety Datasheet Revision 1.0
Boron Nitride Powder

Revision 1.0: 2018/08/24

Date of issue: 2008/01/02

Revision 1.0: 2018/08/23

Important: Although Garage Lube (Pty) Ltd has attempted to provide current and accurate information herein, the information is based on information provided by the manufacturer. Garage Lube (Pty) Ltd makes no representations regarding the accuracy or completeness of information and assumes no liability for any loss, damage, or injury of any kind which may result from, or arise out of, the use of or reliance on the information by any person.

1. Substance / Preparation and Company Identification
Hex Boron Nitride Powder (hBN)

Product names: Boron Nitride Powder, Hex Boron Nitride (hBN)

Application: Dry Lubricant

Imported by: Garage Lube (Pty) Ltd

Postnet Suite 038
Private Bag X6011
South Africa

Phone: +27 (72) 501-0016

Fax: +27 (86) 531-1212

Contact Person: Jeff Frandsen


Email Address:

2. Composition

Substance Name: Boron Nitride

Formula: BN

CAS Number: 10043-11-5

SARA 313: No

RTECS Number: ED7800000

3. Hazards Identification

Substance is an irritant. Irritating to the eyes and respiratory system.

4. First Aid Measures

First Aid Measures: If swallowed, wash out mouth with water provided person is conscious. Call a physician.

Inhalation Exposure: If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Dermal Exposure: In case of contact, immediately wash skin with soap and copious amounts of water.

Eye Exposure: In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes

5. Fire Fighting Measures

Flash Point: N/A

Auto-ignition Temperature: N/A

Suitable Extinguishing Media: Non-combustible. Use extinguishing media appropriate to surrounding fire conditions.

Firefighting Protective Equipment: Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes. Specific Hazard(s): Emits toxic fumes under fire conditions.

Exposure Hazard/s Material: Irritating dust.

6. Accidental Release Measures

Personal procedures and Precautions: Wear respirator, chemical safety goggles, rubber boots, and heavy rubber gloves.

Clean-up Methods: Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.

7. Handling and Storage

User Exposure: Do not breathe dust. Avoid contact with eyes, skin, and clothing. Avoid prolonged or repeated exposure.


Suitable: Keep container closed. Store in a cool dry place.

Special Requirements and Considerations: Hygroscopic.

8. Exposure Controls / PPE

Engineering Controls: Safety shower and eye bath. Mechanical exhaust required.

Personal Protective Equipment: Other: Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing.

General Hygiene Measures: Wash thoroughly after handling.

9. Physical and Chemical Properties

See table on right.

Physical and Chemical Properties
Appearance ColourCream White
Molecular Weight24.82 AMU
BP/BP RangeN/A
MP/MP RangeN/A
Freezing PointN/A
Vapour PressureN/A
Vapour DensityN/A
Saturated Vapour Conc.N/A
SG / Density2.29 g/cm3
Bulk DensityN/A
Odour ThresholdN/A
Volatile %N/A
VOC ContentN/A
Water ContentN/A
Solvent ContentN/A
Evaporation RateN/A
Surface TensionN/A
Partition CoefficientN/A
Decomposition Temp.N/A
Flash PointN/A
Explosion LimitsN/A
Auto-ignition TempN/A
Refractive IndexN/A
Optical RotationN/A
Miscellaneous DataN/A
N/A = not available
10. Stability and Reactivity

Conditions of Instability: Moisture

Conditions to Avoid: Moisture.

Materials to Avoid: Strong oxidizing agents.

Hazardous Decomposition Products

Hazardous Decomposition Products: Nature of decomposition products not known.

10. Toxicological Information
Route of Exposure:

Skin Contact: May cause skin irritation.

Eye Contact: Causes eye irritation.

Inhalation: Material is irritating to mucous membranes and upper respiratory tract.

Multiple Routes: May be harmful by inhalation, ingestion, or skin absorption.

Signs and Symptoms of Exposure:

To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.

11. Ecological Information

No data available.

12. Disposal Considerations

Appropriate Method of Disposal of Substance or Preparation: Bury in a landfill site approved for the disposal of chemical and hazardous wastes. Observe all environmental regulations.

12. Transport Information

Proper Shipping Name: None

Non-Hazardous for Transport: This substance is considered to be non-hazardous for transport.


Non-Hazardous for Air Transport: Non-hazardous for air transport.

13. Regulatory Information
EU Additional Classification

Symbol of Danger: Xi

Indication of Danger: Irritant.

R: 36/37

Risk Statements: Irritating to eyes and respiratory system.

S: 26-36

Safety Statements: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing.

US Classification and Label Text

Indication of Danger: Irritant.

Risk Statements: Irritating to eyes and respiratory system.

Safety Statements: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing.

United States Regulatory Information



Canada Regulatory Information

WHMIS Classification: This product has been classified in accordance with the hazard criteria of the CPR, and the MSDS contains all the information required by the CPR.

DSL: Yes


Disclaimer of Expressed and implied Warranties:

The information presented in this Safety Data Sheet is based on data believed to be accurate as of the date this Safety Data Sheet was prepared. HOWEVER, NO WARRANTY OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY OTHER WARRANTY IS EXPRESSED OR IS TO BE IMPLIED REGARDING THE ACCURACY OR COMPLETENESS OF THE INFORMATION PROVIDED ABOVE, THE RESULTS TO BE OBTAINED REOM THE USE OF THIS INFORMATION OR THE PRODUCT, THE SAFETY OF THIS PROCUCT, OR THE HAZARDS RELATED TO ITS USE. No responsibility is assumed for any damage of injury resulting from abnormal use or from any failure to recommended practices. The information provided above, and the product, are furnished on the condition that the person receiving them shall make their own determination as to the suitability of the product for their particular purpose and on the condition that they assume the risk of their use. In addition, no authorization is given nor implied to practice any patented invention without a license.