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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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Valeria De Matteis et al.
Nanoscale research letters, 14(1), 109-109 (2019-03-30)
The nowadays growing use of nanoparticles (NPs) in commercial products does not match a comprehensive understanding of their potential harmfulness. More in vitro investigations are required to address how the physicochemical properties of NPs guide their engulfment within cells and
Lin Zhao et al.
ACS nano, 13(7), 7508-7516 (2019-06-15)
Heat at intermediate temperatures (120-220 °C) is in significant demand in both industrial and domestic sectors for applications such as water and space heating, steam generation, sterilization, and other industrial processes. Harnessing heat from solar energy at these temperatures, however
Geetha B Heggannavar et al.
ACS omega, 3(7), 8017-8026 (2018-08-09)
Brain glioma is the most lethal type of cancer, with extremely poor prognosis and high relapse. Unfortunately, the treatment of brain glioma is often limited because of the low permeability of anticancer drugs across the blood-brain barrier (BBB). To circumvent
Nils R Blumenthal et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(45), 16124-16129 (2014-10-29)
Extracellular soluble signals are known to play a critical role in maintaining neuronal function and homeostasis in the CNS. However, the CNS is also composed of extracellular matrix macromolecules and glia support cells, and the contribution of the physical attributes
Seong Cheol Hong et al.
International journal of nanomedicine, 6, 3219-3231 (2012-01-13)
Superparamagnetic iron oxide nanoparticles (SPIONs) have been widely utilized for the diagnosis and therapy of specific diseases, as magnetic resonance imaging (MRI) contrast agents and drug-delivery carriers, due to their easy transportation to targeted areas by an external magnetic field.
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