Boron Oxide
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RXSOL-54-1529-026
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Variations
Boron oxide is a colorless glassy solid that is used as an insecticide fluxing agent and bonding agent. It is also known as boric oxide or boria. Boron oxide (B₂O₃), also known as boric oxide or diboron trioxide, is a colorless, glassy solid formed by the dehydration of boric acid. It is a key compound used in various industries, including glass, ceramics, and electronics, and is known for its high-temperature resistance and ability to act as a fluxing agent.
Remarks
Other Applications:
- Insecticide: Boron oxide can be used as an insecticide, targeting the nervous system of insects.
- Dopant in Semiconductors: It's used as a dopant in semiconductor materials.
- High-Temperature Lubricants: Boron oxide is used as an additive in high-temperature lubricants.
- Nuclear Waste Glasses: Boron oxide is commonly substituted for silica in nuclear waste glasses, improving their properties.
- Protective Coating: Boron oxide can be used to protect carbon anodes from air oxidation.
TECHNICAL SPECIFICATON::
- Chemical Formula: B2O3
- CAS Number: 1303-86-2
- Appearance: Colorless, semi-transparent glassy lumps or hard white odorless crystals.
- Molecular Weight: 69.62 g/mol
- Melting Point: ~450 °C (lit.)
- Boiling Point: ~1860 °C (lit.)
- Density: ~2.46 g/mL at 25 °C (lit.)
- Bulk Density: ~900-1100 kg/m3
- Solubility: Moderately soluble in water
- Hygroscopic: Yes
- B2O3 Content: 98.00% min
- SO4 Content: 500 ppm max
- Cl Content: 10 ppm max
- Fe Content: 35 ppm max
- Size Content +0.250 mm: 35.00% max
APPLICATION::
Glass and Ceramics:
- Borosilicate Glass: Boron oxide is a key ingredient in borosilicate glass, known for its high thermal resistance and chemical durability, making it suitable for applications like laboratory glassware, cookware, and ovenware.
- Fluxing Agent: It acts as a flux in the production of glass and enamels, lowering the melting temperature and improving the flow of the molten materials.
- Glass Fibers: Boron oxide is used as an additive in glass fibers, including optical fibers.
- Ceramic Applications: It's used as a bonding agent in the hot isostatic pressing of boron nitride ceramics and as a flux for glazes and enamels.
Chemical Synthesis and Catalysis:
- Starting Material: Boron oxide serves as a starting material for the synthesis of other boron compounds, such as boron carbide.
- Acid Catalyst: It acts as an acid catalyst in organic synthesis and the preparation of boron halides, sodium borohydride, metallic borates, and borate esters.
- Chemical Intermediate: It's used as a chemical intermediate in the production of boron halides, esters, carbide, nitride, and metallic borides.
PRECAUTION::
- Avoid Exposure: Minimize exposure to boron oxide, especially dust, by using local exhaust ventilation or other engineering controls.
- Prevent Dust Formation: Avoid creating dust when handling boron oxide.
- Good Housekeeping: Maintain good housekeeping and sanitation practices in the work area.
- Do not eat, drink, or smoke: during work.
- Wash thoroughly: before eating or smoking.
- Do not blow dust off clothing or skin: with compressed air.
