What is Boron CAS 7440-42-8?
Boron was discovered by Sir Humphry Davy and JLGay-Lussac in 1808. Boron is a trivalent non-metallic element, widely present in evaporated mineral sands, borax and orthoclase. Boron has never been discovered as a free element on Earth. Boron appears as charcoal-gray fragments or black powders or crystalline forms. It is a very hard black material with a high melting point; and exists in many polymorphic forms. Boron has several forms, the most common being amorphous boron, a dark powder that does not react with oxygen, water, acids and bases. It reacts with Chemicalbook metals to form borides. Boron is an essential trace element for plants. Sodium borate is used in biochemical and chemical laboratories to prepare buffers. Boric acid is mainly produced by the reaction of borate minerals with sulfuric acid. Boric acid is an important compound for textiles. The most economically important compound of boron is sodium tetraborate decahydrate or borax, used for insulating glass fibers and perborate bleaching agents. Boron compounds are used in organic synthesis, the manufacture of specific types of glass, and as wood preservatives. Boron wire has high strength and light weight, and is therefore used in advanced aerospace structures.
Boron CAS 7440-42-8 Use
Used for doping of semiconductor material silicon, high-temperature resistant materials, high-temperature high-power semiconductors and metal spraying additives
It has an enhancing effect on plastics such as epoxy resin and metals such as cobalt and tungsten. It can be combined with aluminum and titanium to form high-performance composite materials. These composite materials can work continuously at high temperatures. Boron chemical book Fiber-reinforced aluminum-based composite materials have replaced titanium for manufacturing bombers, which not only reduces weight but also lowers costs. It can also be used as a protective plate for atomic reactors to prevent radiation.
Used as semiconductor dopants, high-purity reagents, etc.
Used for doping of semiconductor material silicon, high-temperature resistant materials, high-temperature high-power semiconductors and metal spraying additives
Boron CAS 7440-42-8 safety
Category
Toxic substances
Toxicity classification
Poisoning
Acute toxicity
Oral - LD50 for rats: 650 milligrams per kilogram; Oral - LD50 for mice: 560 milligrams per kilogram
Explosive characteristics of the substance
Boron dust can spontaneously combust and explode in the air; it can also explode when in contact with lead fluoride or silver fluoride.
Flammable hazardous properties
Boron dust is flammable in the air; it can spontaneously ignite at room temperature when in contact with chlorine gas or fluorine gas. Storage and transportation characteristics: The warehouse should be well-ventilated, kept at low temperature and dry, sealed, and stored separately from PBO, Na2O2, NOx, KNO2, OF2, FNO2, NH3, BR, etc.
Fire extinguishing agent
Water, dry powder, carbon dioxide
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