To search by structure, left click in the box below to display the chemdraw toolbar. Then, draw the chemical structure of interest in the box using the toolbar. When your structure is complete, click “Search by Name” or “Search by SMILES” to generate the product name or SMILES respectively. This feature will search within the Gelest product database for matching chemical names or SMILES. Note: In cases where Gelest uses alternate chemical names, it may be necessary to search for the product of interest by its CAS#.
All structures are computer generated. Please rely on the product data below for placing your order. If you see any errors in structures, please email customer service so that they can be addressed.
EINECS Number: 201-083-8
Alternative Name: TETRAETHYLORTHOSILICATE; TEOS
Specific Gravity: 0.9335
Flashpoint: 46°C (115°F)
HMIS Key: 2-2-1-X
Hydrolytic Sensitivity: 7: reacts slowly with moisture/water
Refractive Index: 1.3818
Application: Source by hydrolysis of SiO2 and sol-gel derived glasses.1
Intermediate for silica spheres with controlled dimensions.2
Reference: 1. Brinker, C. et al. Sol-Gel Science; Academic Press: 1990.
2. Stöber, W. et al. J. Coll. Interface Sci. 1968, 26, 62.
Additional Properties: 260Dipole moment: 1.63 debyeVapor viscosity, 60°: 60 micropoise616°Dielectric constant: 4.1Solubility parameter: 7.87Specific heat: 0.55 cal/g/°7.8728 - 9% SiO2 equivalentTEOS forms low density insulating aerogelsVapor pressure, 60°: 12 mmVapor pressure, 108°: 200 mm