89829

Tetraethyl orthosilicate

analytical standard

• Synonym(s): Orthosilicic acid tetraethyl ester, TEOS, Tetraethoxysilane
• Linear Formula: Si(OC₂H₅)₄
• CAS Number: 78-10-4
• Molecular Weight: 208.33
• Beilstein/REAXYS Number: 1422225
• MDL number: MFCD00009062
• UNSPSC Code: 41116107

Properties

• grade: analytical standard
• vapor density: 7.2 (vs air)
• vapor pressure: <1 mmHg ( 20 °C)
• assay: ≥99.0% (GC)
• form: liquid
• shelf life: limited shelf life, expiry date on the label
• refractive index: n20/D 1.382 (lit.); n20/D 1.382-1.384
• bp: 168 °C (lit.)
• density: 0.933 g/mL at 20 °C (lit.)
• SMILES string: CCO[Si](OCC)(OCC)OCC
• InChI: 1S/C8H20O4Si/c1-5-9-13(10-6-2,11-7-3)12-8-4/h5-8H2,1-4H3
• InChI key: BOTDANWDWHJENH-UHFFFAOYSA-N

Description

Application

Commonly used as a precursor to prepare xerogel

Will interact with dodecylamine in the formation of intercalation compounds of H⁺-magadiite and used in a study of mixed-metal bioactive glasses.

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Safety Information

• pictograms: GHS02,GHS07
• signalword: Warning
• hcodes: H226,H319,H332,H335
• pcodes: P210 - P233 - P240 - P241 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: 113.0 °F - closed cup
• flash_point_c: 45 °C - closed cup