tetrametyylioftisilikaatti

Tetrametyylioftisilikaatti is a chemical compound with the formula C8H20O4Si. It is an organosilicon compound, specifically a silicate ester. In this molecule, a central silicon atom is bonded to four methoxy groups (-OCH3). The term "tetra" indicates four, "methyl" refers to the methyl groups, and "orthosilicate" signifies the silicate structure derived from orthosilicic acid (Si(OH)4).

This compound is a colorless liquid at room temperature. It is soluble in many organic solvents but reacts with water, undergoing hydrolysis. This hydrolysis process breaks the Si-O bonds, releasing methanol and forming silicic acid or silica. Due to its reactivity with moisture, it is often handled under dry conditions.

Tetrametyylioftisilikaatti finds applications primarily as a precursor in the synthesis of silica-based materials. It can be used in sol-gel processes to create silica films, coatings, and powders. These materials are utilized in various industries, including electronics for passivation layers and insulation, optics for anti-reflective coatings, and as supports in catalysis. Its controlled hydrolysis allows for the formation of porous silica structures with tunable properties. The compound's volatility and reactivity make it a useful reagent for chemical vapor deposition (CVD) of silica.