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About This Item
Linear Formula:
Si(OC2H5)4
CAS Number:
Molecular Weight:
208.33
Beilstein:
1422225
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23
grade
reagent grade
Quality Level
vapor density
7.2 (vs air)
vapor pressure
<1 mmHg ( 20 °C)
Assay
98%
form
liquid
refractive index
n20/D 1.382 (lit.)
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
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General description
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.
Application
Commonly used as a precursor to prepare xerogel
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.
Will interact with dodecylamine in the formation of intercalation compounds of H+-magadiite and used in a study of mixed-metal bioactive glasses.
Features and Benefits
- Excellent adhesion on substrates
- Uniform film deposition
- Cross-linker to introduce polymer strands into hydrogel
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
3 - Flammable liquids
WGK
WGK 1
Flash Point(F)
113.0 °F - closed cup
Flash Point(C)
45 °C - closed cup
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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