Silicon monoxide NEW

Silicon monoxide, molecular formula SiO, insoluble in water. The Si-O bond has a length of 150.7pm. SiO is a yellowish brown substance in a vacuum at 1800 ° C. Silicon monoxide is less stable and oxidizes to silicon dioxide in air, only stable above 1200 ° C. Silicon monoxide is soluble in a mixture of hydrofluoric acid and nitric acid, from which silicon tetrafluoride is emitted. Generally, it can be made by the rapid cooling of silicon dioxide after the action of pure silicon in a vacuum at a high temperature of 1300℃. :

SiO2 + Si → 2SiO

Appearance and properties: brown or black bulk or powder

Density: 2.13 g/mL at 25 °C(lit.)

Boiling point: 1880°C

Melting point: 1870 °C

Flash point: 1880°C

Refractive index: 1.9800

Stability: Stable.

Keep container tightly sealed. Store in cool, dry conditions in well sealed containers. Keep container tightly sealed. Store in cool, dry conditions in well sealed containers.

Usage:Silicon monoxide powder is very active, can be used as raw material for fine ceramic synthesis, such as silicon nitride, silicon carbide fine ceramic powder raw material. Used in the preparation of optical glass and semiconductor materials vaporized in a vacuum and coated on metal reflective mirrors used in optical instruments as a protective film. Preparation of semiconductor materials.