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Merck
CN

86578

原硅酸四乙酯

≥99.0% (GC)

别名:

TEOS, 四乙氧基硅烷, 四乙氧基硅烷(IV), 四氧化硅, 硅酸四乙酯, 原硅酸四乙酯

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关于此项目

线性分子式:
Si(OC2H5)4
化学文摘社编号:
78-10-4
分子量:
208.33
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
57653167
EC Number:
201-083-8
Beilstein/REAXYS Number:
1422225
MDL number:
MFCD00009062
Assay:
≥99.0% (GC)
Technique(s):
GC/GC: suitable
Bp:
168 °C (lit.)
Vapor pressure:
<1 mmHg ( 20 °C)

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产品名称

原硅酸四乙酯, ≥99.0% (GC)

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

vapor density

7.2 (vs air)

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.)

Quality Level

200

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Application

原硅酸四乙酯(TEOS)可用于：
  • 用作二氢嘧啶酮合成试剂，结合与氯化铁使用。
  • 用作制作湿敏材料聚（2-丙烯酰胺基-2-甲基丙烷磺酸盐）（poly-AMPS）的改性剂。
  • 用作通过铜催化、无配体Ullmann反应合成三芳基胺和二芳基醚的介质。
  • 用作二氧化硅干凝胶制备的前体，可用于药物载体。
  • 用作Stober法球状体二氧化硅颗粒合成的前体。

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

General description

原硅酸四乙酯(TEOS)是一种无机材料，可用作二氧化硅源，用于合成各种二氧化硅基材料，如二氧化硅、碳氧化硅、硅烷醇、硅氧烷聚合物和有机硅薄膜，适于各种应用。它还可用于混合膜合成及气凝胶生产。其他应用包括地毯和其他物体的涂料。

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

存储类别

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

法规信息

危险化学品
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历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
0000478575
0000478575
BCCN9137
BCCN3373
0000433382

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  1. How does the storage temperature relate to shipping conditions?

    The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment. See Shipping and Storage for more information.

  2. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  3. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  4. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  5. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  6. What type of applications can Product No. 86578, Tetraethyl orthosilicate (TEOS), be used in?

    TEOS can be used to synthesize sol-gels or aerogels.

  7. How do you create a sol-gel with Tetraethyl orthosilicate (TEOS), Product No. 86578?

    TEOS can be polymerized with water; the polymerization is based on the hydrolysis or the Si-O-Et groups through forming networks linked by Si-O-Si groups.

  8. How can I accelerate the polymerization of Tetraethyl orthosilicate (TEOS), Product No. 86578?

    The polymerization of TEOS can be accelerated or driven to completion by the addtion of acid or base, both of which serve as a catalyst.

  9. What are the applications of sol-gels formed from Tetraethyl orthosilicate (TEOS), Product No. 86578?

    One of the most improtant application of the sol-gel process is the snythesis of zeolites. Other applications are optical ceramic materials or functionalized biosensors.

  10. What is the vapor pressure of Tetraethyl orthosilicate (TEOS), Product No. 86578, at room temperature?

    The vapor pressure of TEOS at room temperature is 1.5 Torr.

  11. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Silica xerogels as pharmaceutical drug carriers
Quintanar-Guerrero D, et al.
Expert Opinion on Drug Delivery, 5(6), 485-498 (2009)
Ullmann reaction in tetraethyl orthosilicate: a novel synthesis of triarylamines and diaryl ethers
Zhao Y, et al.
Chemical Communications (Cambridge, England), 30(449), 3186-3188 (2007)
Use of poly (2-acrylamido-2-methylpropane sulfonate) modified with tetraethyl orthosilicate as sensing material for measurement of humidity
Su PG, et al.
Analytica Chimica Acta, 1-2(449), 103-109 (2001)
Ferric chloride/tetraethyl orthosilicate as an efficient system for synthesis of dihydropyrimidinones by Biginelli reaction
Cepanec I, et al.
Tetrahedron, 17(61), 4275-4280 (2005)
The Organosilicon thin Film Deposited Using an Atmospheric Pressure Dual-Frequency 50 kHz/33 MHz Frequency MicroPlasma Jet
Yuan QH, et al.
Contributions to Plasma Physics, 56(9), 870-877 (2016)
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