Project Description
Features
Pure boron powder is brown or black brown odorless powder with active chemical character. Boron compounds were known for thousands of years ago, but the pure boron was first discoverd until 1808 by two French chemists: Sir Humphry Davy and J.L Gay-Lussac. The name Boron originates from a combination of carbon and the Arabic word buraqu meaning borax. It exists in nature mainly by borate minerals. Heating borax with carbon is the key process to obtain boron.
| Formula | Atomic Number | Molecular Weight | Electronegativity (Pauling) | Density | Melting Point | Boiling Point | Vanderwaals radius | Ionic radius | Energy of first ionization |
|---|---|---|---|---|---|---|---|---|---|
| B | 5 | 10.81 g/mol | 2 | 2.3 g.cm-3 at 20 °C | 2076 °C | 3927 °C | 200.pm | 0.027 nm | 800.64 kJ/mol |
Specification
| Item | Color | Purity | APS | Hardness(mohs) | Mg | H2O2 Insoluble | Boron soluble in water | Moisture |
|---|---|---|---|---|---|---|---|---|
| Pure Boron Powder | Brown | >99.9999% | ≤1um | 9.5 | / | / | / | / |
| Boron Powder | Brown | 95-97% | ≤2um | 9.5 | ≤2% | ≤1 | <0.5% | <0.5% |
Applications
- additives in pyrotechnics
- raw material to produce other borides
- deoxidizer in Oxygen-free smelting
- additive in MgO-C bricks used for steel-making high temperature furnace
- a kind of component of advanced ceramic
- additives for welding
- composition of special alloy
- propellant in solid rocket
- ignitor in the air bag of automobile
- coatings or hardening agent
Storage Conditions
This product should be sealed and stored in a cool, drying chamber and should avoid exposing to the air in order to prevent moisture reunion which will affect the dispersion properties and result use. Stress should be avoided.