86578
Tetraethyl orthosilicate
≥99.0% (GC)
동의어(들):
Orthosilicic acid tetraethyl ester, Silicon tetraethoxide, TEOS, Tetraethoxysilane, Tetraethoxysilicon(IV), Tetraethyl silicate
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제품정보 (DICE 배송 시 비용 별도)
Linear Formula:
Si(OC2H5)4
CAS 번호:
Molecular Weight:
208.33
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
EC Number:
201-083-8
Beilstein/REAXYS Number:
1422225
MDL number:
Assay:
≥99.0% (GC)
Technique(s):
GC/GC: suitable
Bp:
168 °C (lit.)
Vapor pressure:
<1 mmHg ( 20 °C)
vapor density
7.2 (vs air)
Quality Segment
vapor pressure
<1 mmHg ( 20 °C)
assay
≥99.0% (GC)
form
liquid
technique(s)
GC/GC: suitable
refractive index
n20/D 1.382 (lit.), n20/D 1.383
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
General description
Tetraethyl orthosilicate (TEOS) is an inorganic material that can be used as a silica source for the synthesis of silica-based materials such as silicon dioxide, silicon oxycarbides, silanol, siloxane polymer, and organosilicon thin films for a variety of applications. It can also be used in the synthesis of blended membranes, and the production of aerogel. Other applications include coatings for carpets and other objects.
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.
Tetraethyl orthosilicate (TEOS) can be used:
- As a reagent along with ferric chloride in the synthesis of dihydropyrimidinones.
- As a modifier in fabrication of humidity sensing material, poly(2-acrylamido-2-methylpropane sulfonate) (poly-AMPS).
- As a medium to synthesize triarylamines and diaryl ethers via copper catalyzed, ligand free-Ullmann reaction.
- As a precursor for the preparation of silica xerogel which finds application in pharmaceutical drug carriers.
- As a precursor for the synthesis of spherical silica particles by Stober process.
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signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 3
target_organs
Respiratory system
저장 등급
3 - Flammable liquids
wgk
WGK 1
flash_point_f
113.0 °F - closed cup
flash_point_c
45 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter