1, Properties: Silicon tetrafluoride is a combustible substance, which can react with water vapor in the air to generate silicic acid and hydrofluoric acid. This is an extremely unstable compound, which is easy to decompose. Silicon tetrafluoride is insoluble in water, but soluble in organic solvents such as benzene and alcohol.
2. Uses: Silicon tetrafluoride is mainly used as an intermediate for preparing other organic or inorganic compounds, such as organosilicon compounds and high-purity silicon. It can also be used for metal surface treatment to improve the adhesion of metal surface. Silicon tetrafluoride is also used as solvent, catalyst and refrigerant.
3. Preparation method: Silicon tetrafluoride is usually prepared by the reaction of silicic acid and hydrofluoric acid. Firstly, silicic acid is dissolved in water, and then hydrofluoric acid is added for reaction. After the reaction is completed, the product is purified by distillation or other separation techniques.
4. Safety information: Silicon tetrafluoride is very corrosive, which can irritate skin, eyes and respiratory tract. Rinse with plenty of water immediately after contact and seek medical help. When using silicon tetrafluoride, wear appropriate respirator, protective glasses and protective gloves to avoid inhalation, contact or ingestion. Silicon tetrafluoride should be stored in a sealed container, away from fire sources and oxidants. Care should be taken during storage and handling to prevent leakage accidents. When silicon tetrafluoride leaks, it should be evacuated from the leaking area quickly and properly cleaned, disposed and treated.