4521-94-2

Basic information

• Product Name: octaethyl trisilicate
• Synonyms: Trisiloxane, 1,1,1,3,3,5,5,5-octaethoxy-; Octaethyl trisilicate; Trisiloxane, octaethoxy-; Silicic acid, octaethyl ester; triethyl pentaethoxydisiloxanyl orthosilicate (non-preferred name)
• CAS NO: 4521-94-2
• Molecular Formula: C₁₆H₄₀O₁₀Si₃
• Molecular Weight: 476.7393
• EINECS: 224-853-5
• Mol File: 4521-94-2.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 357.958°C at 760 mmHg
• Flash Point: 153.412°C
• Density: 1.029g/cm³
• Vapor Pressure: 0mmHg at 25°C
• Refractive Index: 1.43
• CAS DataBase Reference: octaethyl trisilicate(CAS DataBase Reference)
• NIST Chemistry Reference: octaethyl trisilicate(4521-94-2)
• EPA Substance Registry System: octaethyl trisilicate(4521-94-2)

Safety Data

• Hazardous Substances Data: 4521-94-2(Hazardous Substances Data)

Upstream product

• 78-10-4 tetraethoxy orthosilicate 
• 64-17-5 ethanol 
• 18954-65-9 hexaethoxy-cyclotrisiloxane 
• 29167-65-5 tris(silatranyloxyethyl)amine 
• 141-52-6 sodium ethanolate 
• 10026-04-7 tetrachlorosilane 
• 7732-18-5 water 
• 998-30-1 Triethoxysilane 
• 31323-44-1 octachlorotrisiloxane 
• 130969-92-5 octabromo trisiloxane 

Relevant articles and documents

Acyl iodides in organic synthesis: IX. Cleavage of the Si-O-C and Si-O-Si moieties

Reactions of acyl iodides RCOI (R = Me, Ph) with organosilicon compounds involve cleavage of the Si-O-C and Si-O-Si fragments. Acetyl iodide reacts with alkyl(alkoxy)silanes with evolution of heat, and cleavage of the Si-O bond results in the formation of oligo-or polysiloxanes, alkyl iodides, and alkyl acetates. 1,3-Diacetoxytetramethyldisiloxane is formed in the reaction of acetyl iodide with dimethoxy(dimethyl)silane. Acyl iodides readily react with 1-ethoxysilatrane to give 1-acyloxysilatranes as a result of cleavage of the C-O bond. The reaction of acetyl iodide with hexaethyldisiloxane yields triethylsilyl acetate and triethyliodosilane, while in the reaction with octamethyltrisiloxane iodo(trimethyl)silane and dimethyl(trimethylsiloxy)silyl acetate are obtained. Nauka/Interperiodica 2007.

Triethoxysilane, tetraethoxysilane and hexaethoxydisiloxane - Three complementary reagents for the synthesis of hydrogen-rich silylarenes

Triethoxysilane HSi(OEt)3, tetraethoxysilane Si(OEt) 4 and hexaethoxydisiloxane Si2O(OEt)6 have been probed as reagents for the synthesis of hydrogen-rich silyl-arenes Ar(SiH3)n. A large set of new silyl-arenes, varying in their substitution patterns and grades, have been prepared. The results establish the two new silylating agents HSi(OEt)3 and Si 2O(OEt)6 as particularly useful alternatives to Si(OEt)4. The products, which include trihydrosilyl-substituted methylbenzenes, naphthalenes and ferrocenes, have been characterized by NMR and IR spectroscopy, mass spectrometry and single crystal X-ray diffraction.

STRUCTURE OF PRODUCTS OF THE AQUEOUS ETHANOLYSIS OF SILICON TETRACHLORIDE

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