What Is Triethylsilane?
Triethylsilane, with the formula (C2H5)3SiH, is a clear and colorless liquid often used in organic synthesis. It represents one of the simplest trialkylsilanes that remain liquid at room temperature. Its production typically involves the Rochow method, reacting metallic silicon with chlorosilane in the presence of a copper catalyst.
Under legal classifications, it is deemed a non-flammable substance and flammable.
Applications of Triethylsilane
Triethylsilane functions primarily as a reducing agent but also serves in creating hydrosilylation reactions and forming silyl ethers. Its stability, safety profile, and low environmental impact—free from heavy metals—make it advantageous. Its reduction mechanisms include both ionic and radical processes, and it effectively reduces various compounds like acetals, alkenes, aldehydes, and ketones under acidic conditions.
Properties of Triethylsilane
This compound is a colorless liquid with a molecular weight of 116.28 g/mol, a CAS number of 617-86-7, a flash point of -3°C, and a boiling point of 108°C. Its density is 0.73 g/cm3, with a self-ignition temperature of 250°C. Triethylsilane should be kept away from oxidizing agents, acids, bases, water, and metals to prevent undesirable reactions.
Safety Information and Handling
1. GHS Classification
Triethylsilane is classified as a flammable liquid (class 2) with potential for skin and eye irritation. No significant environmental hazards are noted.
2. First Aid Measures
In case of inhalation, move to fresh air; for skin contact, wash immediately with soap and water; if in eyes, rinse thoroughly and remove contact lenses if applicable; if ingested, do not induce vomiting and seek medical attention.
3. Handling Precautions
Use in well-ventilated areas, preferably with local exhaust. Personal protective equipment, including gas masks, gloves, and eye protection, is essential. Ensure workspaces are free from ignition sources and equipped with safety showers and eyewash stations.
4. Firefighting Measures
Avoid water when extinguishing fires involving triethylsilane, instead use powder, CO2, or foam extinguishers. Be aware of toxic fumes that may be produced during combustion.
5. Storage Guidelines
Store in a cool, dry, well-ventilated area away from oxidizing agents. Containers should be inert gas-filled, tightly sealed, and kept away from humidity.
Disposal of triethylsilane should comply with local environmental regulations, preferably handled by certified waste disposal firms.