86578

Tetraethyl orthosilicate

≥99.0% (GC)

• 동의어(들): Orthosilicic acid tetraethyl ester, Silicon tetraethoxide, TEOS, Tetraethoxysilane, Tetraethoxysilicon(IV), Tetraethyl silicate
• Linear Formula: Si(OC₂H₅)₄
• CAS Number: 78-10-4
• Molecular Weight: 208.33
• Beilstein: 1422225
• EC Number: 201-083-8
• MDL number: MFCD00009062
• UNSPSC 코드: 12352103
• PubChem Substance ID: 57653167
• NACRES: NA.22
• 분석: ≥99.0% (GC)
• bp: 168 °C (lit.)
• vapor pressure: <1 mmHg ( 20 °C)

속성

• vapor density: 7.2 (vs air)
• Quality Level: 200
• vapor pressure: <1 mmHg ( 20 °C)
• 분석: ≥99.0% (GC)
• 양식: liquid
• 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

설명

일반 설명

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.

애플리케이션

Commonly used as a precursor to prepare xerogel

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.

Will interact with dodecylamine in the formation of intercalation compounds of H⁺-magadiite and used in a study of mixed-metal bioactive glasses.

안전성 정보

• 픽토그램: GHS02,GHS07
• 신호어: Warning
• 유해 및 위험 성명서: H226,H319,H332,H335
• 예방조치 성명서: P210 - P233 - P240 - P241 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 3
• 표적 기관: 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
• 개인 보호 장비: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter