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Merck

759414

Sigma-Aldrich

原硅酸四乙酯

packaged for use in deposition systems

别名:

原硅酸四乙酯, 四乙氧基硅烷, 硅酸四乙酯, TEOS

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About This Item

线性分子式:
Si(OC2H5)4
CAS号:
分子量:
208.33
Beilstein:
1422225
EC號碼:
MDL號碼:
分類程式碼代碼:
12352103
PubChem物質ID:
NACRES:
NA.23

蒸汽密度

7.2 (vs air)

蒸汽壓力

<1 mmHg ( 20 °C)

化驗

≥99.5% (GC)

形狀

liquid

折射率

n20/D 1.382 (lit.)

bp

168 °C (lit.)

密度

0.933 g/mL at 20 °C (lit.)

SMILES 字串

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 密鑰

BOTDANWDWHJENH-UHFFFAOYSA-N

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應用

Tetraethyl orthosilicate (TEOS) is an oxygen containing precursor of Si used for the deposition of:
  • Si oxide
  • Oxycarbide
  • Doped silicate
  • Silanol
  • Siloxane polymer
  • Organosilicon thin films

The films can be deposited at low temperatues (<250 °C). TEOS is also used to deposit mesoporous and nanoporous thin films of silica. These porous films can be doped during deposition to further enhance their properties.
将与十二胺相互作用形成 H+-麦烃硅钠石的插层化合物,并用于混合金属生物活性玻璃的研究。
常用作制备干凝胶的前体

象形圖

FlameExclamation mark

訊號詞

Warning

危險分類

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

標靶器官

Respiratory system

儲存類別代碼

3 - Flammable liquids

水污染物質分類(WGK)

WGK 1

閃點(°F)

113.0 °F - closed cup

閃點(°C)

45 °C - closed cup


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分析证书(COA)

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Andreas Kay et al.
Journal of the American Chemical Society, 128(49), 15714-15721 (2006-12-07)
Thin films of silicon-doped Fe2O3 were deposited by APCVD (atmospheric pressure chemical vapor deposition) from Fe(CO)5 and TEOS (tetraethoxysilane) on SnO2-coated glass at 415 degrees C. HRSEM reveals a highly developed dendritic nanostructure of 500 nm thickness having a feature
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.
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
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

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