3N Amorphous Boron Powder/Pellet Cas No.7440-42-8

3N Amorphous Boron Powder/Pellet Cas No.7440-42-8

Physical and Chemical Properties

Amorphous Boron features high chemical reactivity. It remains stable in air at room temperature, oxidizes at 300 °C, and ignites at 700 °C with a red flame and faint green tint from slight vaporization.

It is insoluble in water, ethanol, dilute acids and ether. It dissolves in cold concentrated alkalis to produce hydrogen, and is oxidized into boric acid by concentrated nitric acid or concentrated sulfuric acid. At high temperatures, it reacts with oxygen, nitrogen, sulfur, halogens and carbon, and can directly combine with most metals to form borides. Its density is 2.35 g/cm³, Mohs hardness 9.3, and melting point 2300 °C.

Product Advantages

BoronHub supplies high-purity amorphous Boron powder with purity ranging from 85% to 99.9% (custom ultra-high purity above 99.9% available). The standard D50 particle size is ≤2 μm, and sub-nanoscale powder (≤500 nm) can be tailored as requested.

Products are hermetically sealed in vacuum aluminum foil bags (nanoscale variants are not vacuumed). They are suitable for energetic materials, metallurgical additives and synthesis of high-end boron compounds.

Amorphous Boron Enterprise Specification

Package:Generally, it is packaged in vacuum aluminum foil bags with specifications of 500g/1kg (nano powder is not vacuumed);

What are the typical applications of Amorphous Boron?

I. High-Energy Fuels and Propellants

1. Solid Rocket Propellants: Used as a high-energy additive to increase burning rate and specific impulse, suitable for tactical missiles and aerospace booster systems.

2. High-Energy Fuels for Rockets and Missiles: Used in the production of borane compounds (e.g., diborane, decaborane) as key components of liquid or solid high-energy fuels.

II. Nuclear Industry

1. Neutron Absorption Materials: Leveraging the high thermal neutron capture cross-section of Boron-10 (¹⁰B), used in nuclear reactor control rods, emergency shutdown systems, and neutron shielding layers.

2. Neutron Counters: Coated on the inner walls of detectors for thermal neutron detection and energy spectrum analysis.

3. Boron Steel Production: Used as a boron additive to smelt special alloy steels (boron steel) for reactor structural components and neutron shielding parts.

III. Electronic and Electrical Engineering

1. Ignitor Electrodes for Ignitrons: After carbonization at 2300℃, used as cathode materials for ignition cores with low ignition threshold and high ablation resistance.

2. Raw Materials for High-Performance Cathodes: Used to synthesize lanthanum hexaboride (LaB₆), a highly stable, long-life thermionic cathode applied in electron microscopes and high-power microwave tubes.

 

IV. Metallurgy and Material Processing

1. Special Alloy Steel Smelting: Trace boron addition significantly improves hardenability, high-temperature strength, and neutron irradiation resistance of steel.

2. Gas Scavenger for Molten Copper: Removes oxygen and other dissolved gases from molten copper to enhance conductivity and density.

 

3. Boron Fiber Reinforced Materials: Used as the core raw material for boron fibers in aerospace composites and high-performance sports equipment.

V. Catalysts and Chemical Synthesis

1. Organic Synthesis Catalysts: Used in selective hydrogenation, dehydrogenation, and rearrangement reactions to improve yield and selectivity.

2. Ceramic Industry Catalysts: Promote low-temperature sintering and densification of boride ceramics (e.g., TiB₂, ZrB₂).

3. Synthesis of High-Purity Boron Compounds: Used as a boron source to produce high-purity boric acid, sodium borohydride, boron nitride, and other fine chemicals.

4. Preparation of High-Purity Boron Halides: Used to synthesize high-purity BBr₃, BCl₃, etc., as semiconductor diffusion sources and optical fiber dopants.

VI. Automotive Safety Systems

· Airbag Initiators: Used as a component of gas-generating agents; upon collision, it burns rapidly to produce high-pressure nitrogen and inflate the airbag.

VII. Fireworks and Pyrotechnics Industry

· Pyrotechnic Effects Agents: Produces green flames and bright sparks when burned, used in fireworks, signal flares, and military illuminating projectiles.

 

VIII. Pharmaceutical and Biological Fields

· Pharmaceutical Intermediates: Used in the synthesis of Boron-containing drugs (e.g., boronophenylalanine) for Boron Neutron Capture Therapy (BNCT), or as doping sources for antibacterial materials.

 

Our Company solemnly undertakes the following:

We shall not conduct research & development, customization, production,trading or export of elemental boron powder that meets both of the two criteria below:

1.Particle size less than 500 micrometres (regardless of particle morphology);   2. Boron content ≥ 97% by weight.

Boron powder of this specification can serve as raw material for solid propellants and military energetic materials, and is subject to China’s export control regulations.

All our overseas customers are required to submit a written End-User Certificate (EUC). The certificate must specify complete end-user information and the genuine end-use of the goods, and include the undertakings as follows: The goods shall not be utilized for nuclear facilities, military applications or the manufacture of any weapons; resale, transfer or reexport of the goods to any third party is prohibited without prior written approval from the Ministry of Commerce of the People’s Republic of China.

Our Company will retain all EUC documents completely and conduct ongoing risk verification. Should any counterparty breach the above undertakings, we will immediately terminate all cooperation and report the matter to relevant regulatory authorities.