Micro Boron Powder (B)

• Micron and Submicron Options: Particle sizes may include approximately 1 µm, below 1 µm, and other specified distributions.

• Multiple Structural Forms: Amorphous and crystalline elemental boron grades may be available.

• Purity Options: Standard, high-purity, and ultra-high-purity grades, subject to supplier capabilities.

• Custom Particle Distribution: Specify average particle size, D50, D90, or a required size range.

• Specialty Materials Applications: Suitable for evaluating in metallurgy, boride synthesis, advanced materials research, and selected electronic-materials processes.

• Chemical Composition Control: Metallic impurities, oxygen content, and other parameters can be requested.

• Flexible Sourcing: Research quantities and larger industrial quantities may be evaluated according to availability.

• Quality Documentation: COA, SDS, particle-size analysis, and elemental impurity analysis may be requested, subject to supplier availability.

Property	Specification
Product Name	Micro Boron Powder
Chemical Name	Elemental Boron
Chemical Symbol / Formula	B
CAS Number	7440-42-8
Atomic Number	5
Atomic Weight	10.81 g/mol
Appearance	Black, brown-black, or dark brown powder, depending on grade
Structural Forms	Amorphous or crystalline
Purity	Grade-dependent; approximately 90%–92% for some amorphous grades, with 99.9% and higher grades available from selected suppliers
Particle Size	Submicron, approximately 1 µm, and other micron-size grades
Particle Size Distribution	Customer-specified D10, D50, D90, or average particle size, subject to availability
Density	Approximately 2.34 g/cm³ for reference elemental boron material; grade and structure may affect reported values
Melting Point	Commonly reported around 2,076°C; published reference values vary with measurement conditions and source
Water Solubility	Insoluble in water
Chemical Classification	Elemental metalloid powder
Available Grades	Amorphous, crystalline, micron-sized, submicron, and high-purity grades
Packaging	Supplier-standard or custom packaging, subject to availability
Quality Documents	COA, SDS, particle-size analysis, and impurity analysis, subject to availability

• Amorphous Boron Micro Powder: Fine elemental boron in an amorphous form; purity and residual impurity levels depend on manufacturing method.

• Crystalline Boron Powder: Crystalline elemental boron for specialized research and materials applications.

• Submicron Boron Powder: Fine powder with specified average particle sizes below 1 µm, subject to supplier availability.

• 1 Micron Boron Powder: Grades with an approximately 1 µm mean particle size are commercially listed.

• 5 Micron Boron Powder: Selected suppliers list amorphous boron with a D50 around 5 µm.

• High-Purity Boron Powder: 99.9% or higher purity options may be available, depending on supplier capabilities and the required assay basis.

• Ultra-High-Purity Boron Powder: Specialized grades may be available with tighter metallic impurity limits and supporting analytical data.

• Custom-Specification Boron Micropowder: Particle size, morphology, purity, impurity limits, and packaging evaluated against the customer's RFQ.

1. What is micro boron powder?

Micro boron powder is finely divided elemental boron used in specialized materials research, metallurgy, chemical synthesis, and other technical applications. The term typically refers to elemental boron powder with a controlled micron or submicron particle size.

2. What is the CAS number for micro boron powder?

The CAS Registry Number for elemental boron is 7440-42-8. Its chemical symbol is B and its atomic weight is approximately 10.81 g/mol.

3. What particle sizes are available?

Commercial specifications include approximately 1 µm powder, submicron grades, and larger micron-sized distributions. Some suppliers specify D50, while others use a mean particle size or another measurement method. Always confirm the measurement method as well as the nominal size.

4. What is the difference between amorphous and crystalline boron powder?

Amorphous boron lacks the long-range crystalline order characteristic of crystalline boron. The forms can differ in morphology, purity, residual impurities, and behavior in processing. Select the form according to the application and the supplier's verified specifications.

5. What purity grades can be sourced?

Available grades depend on the supplier and manufacturing route. Commercial listings include some amorphous grades around 90%–92% and high-purity products at 99.9% or higher. Confirm total boron assay, analytical basis, and impurity limits before purchasing.

6. Can REG Metals source custom micro boron powder with a COA?

REG Metals can assist with sourcing powder to specified technical requirements. A COA, SDS, particle-size data, and impurity analysis can be requested, subject to supplier availability. Include the required particle size, purity, structural form, quantity, application, and documentation needs when requesting a quotation.