Boron trioxide or diboron trioxide is the oxide of boron with the formula B 2 O 3. It is a colorless transparent solid, almost always glassy (amorphous), which can be crystallized only with great difficulty.

2024年11月2日 · Boron trioxide, also known as diboron trioxide, is the compound with the chemical formula B₂O₃. It is a colorless, transparent solid that is almost always glassy (amorphous), but can be crystallized with great difficulty.

ChemSpider record containing structure, synonyms, properties, vendors and database links for Boron trioxide, 1303-86-2, JKWMSGQKBLHBQQ-UHFFFAOYSA-N

Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10 −6 K −1 at 20 °C), making them more resistant to …

Boron oxide is one of the oxides of boron. It is white, glassy, and solid, also known as diboron trioxide, formula B 2 O 3. It is almost always found as the vitreose (amorphic) form; however, it can be crystallized after extensive annealing. It is one …

2019年4月12日 · Boron trioxide is a glass like solid or white powder with the chemical formula B2O3. Boron trioxide is very unreactive towards most common reagents. While an anhydride oxide, it does not react with water visibly. It can however be reduced to elemental boron with magnesium powder in a thermite reaction. Magnesium boride is produces as side product.

Boron oxide, B 2 O 3, is made by the dehydration of boric acid, (6.7.1). It is a glassy solid with no regular structure, but can be crystallized with extreme difficulty. The structure consists of infinite chains of triangular BO 3 unit (Figure 6.7.1 6.7. 1). Boron oxide is acidic and reacts with water to reform boric acid, (6.7.1).

Boron particles are covered by a protective boron trioxide (B 2 O 3) layer. The boiling temperature of the oxide layer is 2316 K, lower than that of the melting and boiling temperatures of boron, which are 2450 and 3931 K, respectively.

2023年12月4日 · Boron trioxide, often referred to as boron oxide, is a white, odorless, and tasteless powder that poses a significant risk when inhaled or ingested. Because of its minuscule particle dimensions, it can easily become airborne, making it a formidable occupational hazard.

The most common oxide of boron is boron trioxide, $\ce{B2O3}$, which is the anhydride of boric acid: $$\ce{H3BO3 -> HBO2 + H2O}$$ $$\ce{2HBO2 -> B2O3 + H2O}$$ $$\text{net} \ \ce{2H3BO3 -> B2O3 + 3H2O}$$ As the anhydride of an acid, boron trioxide is acidic. It reacts with water to regenerate the acid: $$\ce{B2O3 + 3H2O -> 2H3BO3}$$