What’s Boron Oxide?

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Boron oxide is a chemical compound with three forms: boron monoxide, boron trioxide, and boron suboxide. Boron trioxide is the most commonly used and is used in glassmaking, optical fibers, and as an insecticide. Boron suboxide has six boron atoms and is very hard and stable, making it ideal for industrial purposes.

Boron oxide is a form of chemical compound that mainly contains the elements boron and oxygen. This compound usually comes in three forms: boron monoxide, boron trioxide, and boron suboxide. These forms of boron oxide are usually colorless or whitish, with almost no odor. They are particularly useful in the production of glass and enamel.
Simply put, a form of boron oxide is distinguished by how many boron atoms and oxygen atoms are present in the compound. Boron monoxide, for example, has two boron atoms bonded to a single oxygen atom (B2O). Of all forms, this oxide is probably the most unstable and, therefore, the least used in manufacturing industry. It is sometimes combined with water to convert the compound into boric acid. Boron monoxide itself is not flammable, but combining it with other compounds such as calcium oxide and bromine pentafluoride can cause combustion and fires.

Probably the most common and most widely used of all types of boron oxide is boron trioxide, which has two boron atoms connecting three oxygen atoms (B2O3). It usually comes in the form of a fine white powder that can undergo crystallization to make the compound stronger and more robust. Boron trioxide may be odorless and colorless, but it has a bitter taste. The compound can be created when borax, used as a cleaner and household cleaner, undergoes a sulfuric acid treatment.

In glassmaking, boron trioxide often functions as a flux, or cleaning tool, for glass and enamel plates, probably to remove some impurities that the plates got from the fire. The compound is also used to make optical fibers and borosilicate glass which is often used for test tubes and beakers. Combining the compound with a small percentage of boron nitride will also make a good bonding agent for ceramics. Boron trioxide can also be used as an insecticide.

The third type of boron oxide is boron suboxide, which has the largest number of boron atoms in its formula: six boron atoms with only one hydrogen atom. Of the three boron oxides, boron suboxide is probably the most superior, having superb strength and hardness, said to nearly reach the hardness of a diamond. This is probably due to the six boron atoms making a very tight bond with each other, having only one oxygen atom fitted in tiny notches. It is also a very good conductor of heat and has excellent chemical stability, making it an ideal material for industrial purposes.




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