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What is Silicon Monoxide?
The chemical formula for SiO is an inorganic substance. It is an amorphous black-brown powder that turns yellowish under normal temperatures and pressure. It has a melting and boiling point of 1802degC respectively. The density is 2,13g/cm3. It is barely soluble in liquid water. When heated, it releases silicon tetrafluoride. The silicon monoxide in the air will oxidize and become silicon dioxide. When the silicon monoxide vapour is slowly condensed (see disproportionation reactions), it will disproportionate into silicon and silica dioxide.
Silicon monoxide preparation
1. After silicon dioxide has reacted with elemental silicon, rapid cooling is required to make silicon monoxide.
2. The silicon dioxide powder is mixed with coal tar powder and silicon dioxide with 99.5% SiO2 content. The C/SiO2 molar mixing ratio is 2.0. This mixture is heated to 1600°C under reduced pressure.
Property and stability properties of silicon monoxide
The material is not stable. It will oxidize into silicon dioxide in air and only remains stable at temperatures over 1200degC.
Avoid open flames and high temperatures. It is not soluble when mixed with hydrofluoric or nitric acid. Heat and electricity are well insulated by this material. It is oxidized in air and forms a silicon oxide film. In oxygen, it burns and then reacts with the water to produce hydrogen. In the warm alkaline solution, hydrogen is produced and silicate is dissolved.
Silicon monoxide use
A fine silicon monoxide can be used to synthesize fine ceramics due to its high activity. This includes silicon nitride or silicon carbide. Useful in the preparation optical glass and semiconductors.
As a protective layer, evaporate the material in a vacuum. Preparation semiconductor materials.
In the event of eye contact, rinse with lots of water immediately and take to a doctor.
Wear protective clothing.
Eyes, skin, and respiratory tract are all affected.
Most water bodies are only mildly affected by this substance. Do not allow large quantities of undiluted products to enter groundwater, waterways or sewage system.
Avoid light, open flames and high temperatures.
Place in a ventilated, dry and airtight place.
Inhalation – If the patient inhales, it is best to move them to a fresh air environment.
Skin contact: Remove all contaminated clothing. Wash your skin with soap and warm water. Seek medical attention if you feel unwell.
Eye contact: Separate eyelids, and rinse them with normal saline. Seek medical attention immediately.
Ingestion Rinse your mouth with water and do not vomit. Seek medical attention immediately.
Advice for protecting rescuers – Move the patient into a safe area. Consult with a doctor. The doctor should see this sheet of chemical safety information.
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