Tetraethyl orthosilicate
ALDRICH/131903 - reagent grade, 98%
Synonym: Orthosilicic acid tetraethyl ester; Silicon tetraethoxide; TEOS; Tetraethoxysilane; Tetraethoxysilicon(IV); Tetraethyl silicate; Orthosilicic acid tetraethyl ester; TEOS; Tetraethoxysilane
CAS Number: 78-10-4
Empirical Formula (Hill Notation): C8H20O4Si
Molecular Weight: 208.33
EC Number: 201-083-8
MDL Number: MFCD00009062
Linear Formula: Si(OC2H5)4
Product Type: Chemical
assay | 98% |
bp | 168 °C (lit.) |
density | 0.933 g/mL at 20 °C (lit.) |
form | liquid |
grade | reagent grade |
InChI | 1S/C8H20O4Si/c1-5-9-13(10 |
InChI key | BOTDANWDWHJENH-UHFFFAOYSA |
Quality Level | 200 ![]() |
refractive index | n |
SMILES string | CCO[Si](OCC)(OCC)OCC |
vapor density | 7.2 (vs air) |
vapor pressure | <1 mmHg ( 20 °C) |
Application: | Commonly used as a precursor to prepare xerogel |
Application: | Will interact with dodecylamine in the formation of intercalation compounds of H+-magadiite and used in a study of mixed-metal bioactive glasses. |
Packaging: | 1, 2.5, 4 L in glass bottle |
Packaging: | 25, 250, 500 mL in glass bottle |
Symbol | ![]() ![]() |
Signal word | Warning |
Hazard statements | H226 - H319 - H332 - H335 |
Precautionary statements | P210 - P233 - P240 - P241 - P304 + P340 + P312 - P305 + P351 + P338 |
Hazard Codes | Xn |
Risk Statements | 10-20-36/37 |
RIDADR | UN1292 - class 3 - PG 3 - Tetraethyl silicate |
WGK Germany | WGK 1 |
Flash Point(F) | 113.0 °F - closed cup |
Flash Point(C) | 45 °C - closed cup |
Purity | 98% |
bp | 168 °C (lit.) |
Density | 0.933 g/mL at 20 °C (lit.) |
Refractive Index | n |
UNSPSC | 12352300 |