Boron oxide CAS1303-86-2

Details:

Density 2.46g /mL at 25 °C(lit.)

Boiling point 1860 °C

Melting point 450 °C(lit.)

Molecular formula B2O3

Molecular weight 69.62

Flash point 1860°C

PSA 43.37,000

Appearance properties White powder or glass sheet

Vapor density >1 (vs air)

Storage condition

1. Keep the storage device sealed, stored in a cool and dry place, ensure that the working room has good ventilation or exhaust device, away from fire, heat source.

2. It should be stored separately from acids and should not be mixed. Staff should take good protection, if accidentally touched the skin and eyes, should immediately wash with plenty of water.

stability

1. Will not decompose if used and stored according to specifications. No known hazard reactions. Avoid moisture/moisture.

2. The surface is smooth and tasteless. Soluble in acid, ethanol, hot water, slightly soluble in cold water. Stable to heat, white heat is not reduced by carbon, but alkali metals, magnesium, aluminum can reduce it to elemental boron. When heated to 600 ℃, it can become a viscous liquid. In the air can be strongly absorbent, boric acid. It can be combined with several metal oxides to form characteristic colored boron glass, which can be completely miscible with the oxides of alkali metals, copper, silver, aluminum, arsenic, antimony and bismuth. Toxic!

3. Boron trioxide obtained from crystalline boric acid is a white, porous, slightly fused substance. It is easily crushed, but must be removed from the atmosphere. The boron trioxide is highly reactive, giving off heat and sizzling when it comes into contact with water vapor.