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Boron Powder Amorphous Boron Powder CAS 7440-42-8

Item No.: Tr-B
Boron powder is black or silver-gray solid. Crystal boron is black, second only to diamond in hardness, and has a relatively brittle texture.
Particle size: 2-5um; 325mesh
Amorphous Boron Powder Properties

About Boron Powder Amorphous Boron Powder:

Boron powder is a black or dark brown powder that can react with fluorine at room temperature and will not be corrupted by alkali and hydrofluoric acid aqueous solutions.

Boron powder is also called amorphous boron powder. Boron has a high mass calorific value and volume calorific value. It is a light brown to gray-black powder with relatively active chemical properties. Still, it is relatively stable at room temperature and will be oxidized when the temperature reaches 300 degrees Celsius. The ignition level is very high, requiring 700 degrees Celsius to ignite. Boron powder can react with oxygen, nitrogen, and sulfur or directly combine with certain metals to form certain borides.


Amorphous boron is a brown powder; amorphous boron is a brown powder. Amorphous boron is a brown powder. Crystalline boron is black, very hard (approximately 9.5 at Mohs hardness), and has a poor conductor at room temperature. Element boron is used as a dopant in the semiconductor industry, and boron compounds play an important role as light structural materials, pesticides and preservatives, and chemical synthesis reagents. 


Feel free to inquire about the latest boron powder price if you would like to buy boron powder in bulk.


Pure Boron Powder Properties:

Elemental boron CAS 7440-42-8 is a black or dark brown powder. When oxidized in the air, it will prevent the internal boron from continuing to oxidize due to forming a boron trioxide film. It can react with fluorine at normal temperature and is not corroded by hydrochloric acid and hydrofluoric acid aqueous solution. Boron is insoluble in water; powdered boron is soluble in boiling nitric acid, sulfuric acid, and most molten metals, such as copper, iron, manganese, aluminum, and calcium.

Specicifaction of Boron powder:
Purity: >95%
Particel size: 2-5um; 325mesh


Amorphous Boron Powder MF: B

Amorphous Boron Powder MW:10.81

Amorphous Boron Powder Melting point:2300 ℃ ±2 ℃

Amorphous Boron Powder Sublimation temperature:2550 ℃

Amorphous Boron Powder Relative density:2.34-2.37

Amorphous Boron Powder Solubility: Insoluble in water, hydrochloric acid, ethanol, and ether, soluble in cold concentrated alkali solution, decomposes into hydrogen by concentrated sulfuric acid, nitric acid oxidation into boric acid.


 Product features of Boron Powder Amorphous Boron Powder:

 The quality is stable and reliable.

 This product can be in store for a long time.

 According to user requirements, processing customized different particle sizes of products.


Technical Parameter of Boron Powder Amorphous Boron Powder :

Chemical Composition B P S Si Fe Mg O C

Test Result (%) 95 0.05 0.02 0.11 0.15 0.21 0.15 0.17


How is Boron Powder Amorphous Boron Powder produced?

There are two main techniques to obtain pure boron powder: gas and magnesiothermic reaction. The first technique uses hydrogen gas to reduce gaseous boron trichloride (BCl3), whereas the latter uses a combination of heat and magnesium to reduce the boron trioxide (B2O3) to elemental boron.


Boron Powder Uses:

Boron powder is commonly used in metal smelting, electronic product manufacturing, ceramic manufacturing, chemical industry, nuclear industry, etc. The specific functions of boron nitride are as follows:

1. Boron powder can be used to make various boron-containing compounds, used as raw materials for the production of boron fibers, and important raw materials for the production of high-purity boron halide;

2. Boron powder is added in the form of a compound as a gas scavenger for the smelting of special alloy steel or molten steel;

3. Boron powder is used as high-energy fuel for rocket spacecraft,

4. Boron powder is used as the ignition pole of the ignition tube in the electronics industry;

5. Boron powder replaces precious or scarce metals;

6. Boron powder is used as a protective material for the atomic energy industry and the control rod in the atomic reactor;

7. Boron powder also can be used as a catalyst for organic chemical reactions.


Storage Condition of Boron Powder Amorphous Boron Powder :

The damp reunion will affect boron powder dispersion performance and using effects. Therefore, amorphous boron powder should be sealed in vacuum packing and stored in a cool and dry room; the amorphous boron powder can not be exposed to air. In addition, the amorphous boron powder should be avoided under stress.


Packing & Shipping of Boron Powder Amorphous Boron Powder :

We have many kinds of packing, depending on the quantity of amorphous boron powder.

Amorphous boron powder packing: vacuum packing, 100g, 500g, or 1kg/bag, 25kg/barrel, or as you request.

Amorphous boron powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment is received.



Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.

If you are looking for high-quality boron powder, please feel free to contact us and send an inquiry. ([email protected])


Amorphous Boron Powder Properties

Other Names Boron Powder, amorphous boron
CAS No. 7440-42-8
Compound Formula B
Molecular Weight 10.811
Appearance Dark Brown
Melting Point 2079 °C
Boiling Point 2550 °C
Density 2.34 g/cm3
Solubility in H2O N/A
Electrical Resistivity 1.8 x 1012 microhm-cm @ 0 °C
Poisson's Ratio N/A
Specific Heat 0.245 Cal/g/K @ 25 °C
Thermal Conductivity 0.274 W/cm/K @ 298.2 K
Thermal Expansion 5–7 µm·m-1·K-1 @ 25 °C
Young's Modulus N/A

Amorphous Boron Powder Health & Safety Information

Signal Word Warning
Hazard Statements H228-H302+H332-H335
Flash Point Not applicable
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
RTECS Number ED7350000
Transport Information DOT
WGK Germany NWG
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