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Merck

09-2460

Tetraethyl orthosilicate

SAJ first grade, ≥95.0%

Synonym(s):

Orthosilicic acid tetraethyl ester, TEOS, Tetraethoxysilane

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About This Item

Linear Formula:
Si(OC2H5)4
CAS Number:
78-10-4
Molecular Weight:
208.33
EC Number:
201-083-8
UNSPSC Code:
12352300
PubChem Substance ID:
329748747
Beilstein/REAXYS Number:
1422225
MDL number:
MFCD00009062

Key Documents

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Product Name

Tetraethyl orthosilicate, SAJ first grade, ≥95.0%

InChI key

BOTDANWDWHJENH-UHFFFAOYSA-N

InChI

1S/C8H20O4Si/c1-5-9-13(10-6-2,11-7-3)12-8-4/h5-8H2,1-4H3

SMILES string

CCO[Si](OCC)(OCC)OCC

grade

SAJ first grade

vapor density

7.2 (vs air)

vapor pressure

<1 mmHg ( 20 °C)

assay

≥95.0%

form

liquid

availability

available only in Japan

refractive index

n20/D 1.382 (lit.)

bp

168 °C (lit.)

density

0.933 g/mL at 20 °C (lit.)

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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.

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Warning

Hazard Classifications

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

target_organs

Respiratory system

Storage Class

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Group 4: Flammable liquids + Type 2 petroleums + Hazardous rank III + Water soluble liquid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

09-2460-5-500ML-J:

jan

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Certificates of Analysis (COA)

Lot/Batch Number
A6766
A2179
A1965
A8647
A8545

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Lin Lin et al.
Colloids and surfaces. B, Biointerfaces, 101, 97-100 (2012-07-17)
Hollow silica spheres with round mesoporous shells were synthesized by core-shell template method, using monodispersed cationic polystyrene particles as core, and TEOS (tetraethoxysilane) as the silica source to form shell. After calcination at 550°C, uniform spheres with a thin shell
Tom Hasell et al.
Advanced materials (Deerfield Beach, Fla.), 24(42), 5732-5737 (2012-08-30)
Macroscopic inorganic porous beads are imbibed with a "porous molecular additive" by simple solution processing techniques, resulting in controllable loading and increased surface area. The porous additive consists of soluble organic cage molecules that precipitate as microporous crystals when solutions
Evan M Hetrick et al.
Biomaterials, 30(14), 2782-2789 (2009-02-24)
The ability of nitric oxide (NO)-releasing silica nanoparticles to kill biofilm-based microbial cells is reported. Biofilms of Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis, and Candida albicans were formed in vitro and exposed to NO-releasing silica nanoparticles. Replicative viability
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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