COMMERCIAL
78-10-4

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.

TETRAETHOXYSILANE, 98%

Product Code: SIT7110.0

Cas No: 78-10-4

R&D quantities:

17 kg
$323.00
3 kg
$87.00
100 g
$17.00

Boiling Point: 169°

EINECS Number: 201-083-8

Melting Point: -77°

Molecular Weight: 208.33

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

Formula: C8H20O4Si

Refractive Index: 1.3818

TSCA: TSCA

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: 260
Dipole moment: 1.63 debye
Vapor viscosity, 60°: 60 micropoise
Critical temperature: 616°
Dielectric constant: 4.1
Coefficient of thermal expansion: 1.1 x 10-3
Solubility parameter: 7.87
Coefficient of thermal conductivity: 4.0
Specific heat: 0.55 cal/g/°
28 - 9% SiO2 equivalent
TEOS forms low density insulating aerogels
Vapor pressure, 20°: 11.8 mm
Vapor pressure, 60°: 12 mm
Vapor pressure, 108°: 200 mm
Dipole moment: 1.63 debye