Product Name: Boron Powder (B) 
Specification: 0.8-10um (D50) 
Appearance: Irregular 
Color: Black or Brown 
Features: High strength, lightweight, high heat resistance 
Application: Metallurgy, electronics, pharmaceuticals, ceramics, nuclear industry, chemical industry and other fields

Product Name: Boron Powder 
Status: Powder 
Chemical formula: B 
Particle size: 1-5 microns 
Purity: 96% 
Crystal structure: amorphous, crystalline powder 
Appearance: Light brown to grayish black metal powder 
Packaging: 1000g/bag, PE bag 
Physical and chemical characteristics: 
The element boron has two stable isotopes, 10B (atomic weight 10.0129) and 11B (atomic weight 11.00931), which are alpha rhombic crystals at low temperatures, beta rhombic crystals at high temperatures, tetragonal crystals, and amorphous crystals. The physical properties of different forms also vary. Relative density (alpha type) 2.46, (beta type) 2.35, (tetragonal crystal) 2.31, (amorphous) 2.35. The melting point is 2190 ℃ and the boiling point is 3680 ℃. Heat of vaporization 480kj/mol, heat of melting 50.2kj/mol, hardness 11, thermal conductivity (25 ℃) 27.4W/(m.K). Insoluble in water, hydrochloric acid, ethanol, and ether. Dissolve in cold concentrated alkaline solution and release hydrogen gas. It can be oxidized to boric acid by concentrated nitric acid and concentrated sulfuric acid. At high temperatures, it can interact with oxygen, nitrogen, ammonia, sulfur, halogens, and carbon to form various compounds. It can also directly react with many metals to form metal borides, and can react with organic compounds to form organic borides. When reacting with hydrogen, it can form a series of covalent hydrides - boranes. Amorphous boron powder is a black brown powder, odorless and tasteless, with relatively active chemical properties. It is stable in air and at room temperature, oxidized when heated to 300 ℃, and ignites when heated to 700 ℃. The trace amount of vaporized boron flame appears green. Crystalline boron is black gray, a hard and brittle solid with a metallic luster, and is more stable than amorphous boron. Elemental boron is easily absorbed by the intestine and can also be absorbed by the skin. The toxic symptoms manifest as rash and central nervous system inhibition. 
Product Usage: 
(1) Fireworks industry: Explosive triggers, boron flames appear green. 
(2) Rocket and missile fuel rich propellants. 
(3) Nuclear industry: neutron counter tubes, neutron absorbers, reactor control rods. 
(4) Automotive airbags: initiators. 
(5) Powder metallurgy additives, thermal spray surface coatings. 
(6) Metallurgy: gas scavengers, smelting of special steel. 
(7) Semiconductor industry: doping elements. 
(8) Pharmaceutical industry and organic synthesis: catalysts. 
(9) Synthetic borides: boron containing functional ceramics, boride superconductors, etc. 
(10) The glass industry. 
(11) Electronic industry: ignition electrode (cathode material) for ignition tubes. 
(12) Welding powder: an important part of weapon welding. 
matters needing attention: 
△ Safety instructions: This product is toxic by inhalation or ingestion. Inhalation affects the central nervous system, ingestion can cause gastrointestinal irritation and boron poisoning, and skin and eye contact can cause mild irritation. When operating, wear safety goggles, dust masks, and rubber gloves. 
Product packaging: vacuum packaging, aluminum platinum bag lined with plastic bag. Each bag has a net weight of 1kg. 
Storage method: Store in a cool, ventilated, and dry warehouse. The shelf life is 12 months, and it can still be used after passing the re inspection. 
Product transportation: During transportation, avoid severe collisions, rain, and direct sunlight, and do not mix with strong oxidants. 
Other: In order to meet customer needs, the company can develop and research products according to their special requirements. 
Attention: Elemental boron is a black or dark brown powder. When oxidized in air, the formation of boron trioxide film hinders the further oxidation of internal boron. Amorphous boron has active chemical properties. Powder and air can form explosive mixtures. Reduce boron anhydride with magnesium to produce amorphous boron.

Technical index standard of boron powder