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131903

Sigma-Aldrich

Tetraethylorthosilikat

reagent grade, 98%

Synonym(e):

Orthokieselsäure-Tetraethylester, Silizium-Tetraethoxid, TEOS, Tetraethoxysilan, Tetraethoxysilizium(IV), Tetraethylsilikat

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About This Item

Lineare Formel:
Si(OC2H5)4
CAS-Nummer:
78-10-4
Molekulargewicht:
208.33
Beilstein:
1422225
EG-Nummer:
201-083-8
MDL-Nummer:
MFCD00009062
UNSPSC-Code:
12352103
PubChem Substanz-ID:
24848042
NACRES:
NA.23

Qualität

reagent grade

Qualitätsniveau

200

Dampfdichte

7.2 (vs air)

Dampfdruck

<1 mmHg ( 20 °C)

Assay

98%

Form

liquid

Brechungsindex

n20/D 1.382 (lit.)

bp

168 °C (lit.)

Dichte

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

InChIKey

BOTDANWDWHJENH-UHFFFAOYSA-N

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Allgemeine Beschreibung

Tetraethyl orthosilicate(TEOS) is a colorless liquid alkoxide widely used as precursor to deposition of silicon dioxide (SiO2) thin films. It is also utilized in hydrogels, nanoparticle-based drug delivery systems, and chemical crosslinking of polymers.

Anwendung

Tetraethyl orthosilicate can be used:
  • As an anti-solvent to fabricate efficient perovskite layer for inverted planar solar cells with enhanced power conversion efficiency and reproducibility. TEOS helps to achieve high-quality perovskite films with reduced density of defects, and thus slower carrier recombination.
  • As a sol-gel precursor to synthesize SiO2-TiO2 anti-reflective self-cleaning coatings for solar cells.
  • To fabricate nano silica functionalized crosslinked hybrid membranes for proton exchange membrane fuel cell applications. These membranes have better proton conductivity and thermal stability.
  • To prepare poly(vinylidene fluoride)/TEOS matrix separator to enhance the performance of Li-ion batteries. The separator exhibits excellent electrolyte retention and wettability.

Häufig als Vorstufe zur Herstellung von Xerogel verwendet
Wechselwirkung mit Dodecylamin bei der Bildung von Interkalationsverbindungen von H+-Magadiit und Verwendung in einer Studie über bioaktive Gläser aus Mischmetall.

Leistungsmerkmale und Vorteile

  • Excellent adhesion on substrates
  • Uniform film deposition
  • Cross-linker to introduce polymer strands into hydrogel

Piktogramme

FlameExclamation mark
GHS02,GHS07

Signalwort

Warning

Gefahreneinstufungen

Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 3

Zielorgane

Respiratory system

Lagerklassenschlüssel

3 - Flammable liquids

WGK

WGK 1

Flammpunkt (°F)

113.0 °F - closed cup

Flammpunkt (°C)

45 °C - closed cup

Persönliche Schutzausrüstung

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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