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131903

Sigma-Aldrich

tetra-etil ortosilicato

reagent grade, 98%

Sinonimo/i:

Estere tetraetilico dell’acido ortosilicico, TEOS, tetra-etossi-silano

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About This Item

Formula condensata:
Si(OC2H5)4
Numero CAS:
78-10-4
Peso molecolare:
208.33
Beilstein:
1422225
Numero CE:
201-083-8
Numero MDL:
MFCD00009062
Codice UNSPSC:
12352103
ID PubChem:
24848042
NACRES:
NA.23

Grado

reagent grade

Livello qualitativo

200

Densità del vapore

7.2 (vs air)

Tensione di vapore

<1 mmHg ( 20 °C)

Saggio

98%

Forma fisica

liquid

Indice di rifrazione

n20/D 1.382 (lit.)

P. eboll.

168 °C (lit.)

Densità

0.933 g/mL at 20 °C (lit.)

Stringa SMILE

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
BOTDANWDWHJENH-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

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.

Applicazioni

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.

Interagisce con dodecil-ammina nella formazione di composti di intercalazione di H+-magadiite e usati in uno studio di vetri bioattivi con metalli misti.
Usato comunemente come precursore nella preparazione di xerogel

Caratteristiche e vantaggi

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

Pittogrammi

FlameExclamation mark
GHS02,GHS07

Avvertenze

Warning

Indicazioni di pericolo

H226,H319,H332,H335

Classi di pericolo

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

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

113.0 °F - closed cup

Punto d’infiammabilità (°C)

45 °C - closed cup

Dispositivi di protezione individuale

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

Certificati d'analisi (COA)

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