562-90-3

Basic information

• Product Name: SILICON TETRAACETATE
• Synonyms: Silicon(IV) Acetate, Anhydrous;Tetraacetyl orthosilicate;Silicon(iv)acetate, 93%, tech.;Silicon(IV) acetate, min. 95%;Silicic tetraacetic acid tetraanhydride;Tetraacetic acid silicon salt;Silicon(IV) Acetate, Anhydrous 99%;Silicon tetraacetate 98%
• CAS NO: 562-90-3
• Molecular Formula: C₈H₁₂O₈Si
• Molecular Weight: 264.26
• EINECS: 209-239-7
• Product Categories: Acetoxy Silanes;Crosslinkers;Crosslinking Agents;C8 to C9;Carbonyl Compounds;Esters;metal acetate salt;Building Blocks;C8 to C9;Carbonyl Compounds;Chemical Synthesis;Organic Building Blocks
• Mol File: 562-90-3.mol

Chemical Properties

• Melting Point: 111-115 °C(lit.)
• Boiling Point: 148 °C5 mm Hg(lit.)
• Flash Point: >110°C
• Appearance: white/crystal
• Density: 1,18 g/cm3
• Vapor Density: >1 (vs air)
• Storage Temp.: 0-6°C
• Solubility: Soluble in acetone and benzene.
• Water Solubility: soluble acetone, benzene [MER06]
• Sensitive: Moisture Sensitive
• Merck: 14,8498
• BRN: 994868
• CAS DataBase Reference: SILICON TETRAACETATE(CAS DataBase Reference)
• NIST Chemistry Reference: SILICON TETRAACETATE(562-90-3)
• EPA Substance Registry System: SILICON TETRAACETATE(562-90-3)

Safety Data

• Hazard Codes: C
• Statements: 34
• Safety Statements: 26-36/37/39-45
• RIDADR: UN 3261 8/PG 2
• WGK Germany: 3
• F: 10
• TSCA: Yes
• HazardClass: 8
• PackingGroup: II
• Hazardous Substances Data: 562-90-3(Hazardous Substances Data)

Usage

Uses

Used in Thin Film Preparation:
Silicon tetraacetate is used as a precursor in the preparation of silicon dioxide thin films by a direct photochemical vapor deposition method. This application is particularly useful in the semiconductor and electronics industries for creating high-quality thin films with desired properties.
Used in Silicon Complexes Synthesis:
It serves as a precursor to prepare silicon complexes with monofunctional bidentate Schiff bases. These complexes have potential applications in various fields, including materials science and catalysis.
Used in Low-Temperature SiO2 Production:
Silicon tetraacetate is used as an alternative to silicon hydride and alkoxide for low-temperature silicon dioxide production. This makes it a valuable compound for processes that require lower temperatures, reducing energy consumption and potential side reactions.
Used in Silica Gel and Ethyl Acetate Synthesis:
It reacts with ethanol in the absence of water to produce silica gel and ethyl acetate. Silica gel is widely used as a desiccant, adsorbent, and catalyst support, while ethyl acetate is a common solvent in various industries.
Used as a Sol-Gel Precursor:
Silicon tetraacetate is employed as a sol-gel precursor, which is a method for producing solid materials from small molecular precursors. The sol-gel process is used in various applications, including the production of optical fibers, coatings, and advanced materials with unique properties.

Purification Methods

It can be crystallised from mixtures of CCl4 and pet ether or Et2O, or from acetic anhydride and then dried in a vacuum desiccator over KOH. Ac2O adheres to the crystals and is removed first by drying at room temperature, then at 100o for several hours. It is soluble in Me2CO, is very hygroscopic and effervesces with H2O. It decomposes at 160-170o. [Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 701 1963, Beilstein 2 H 171.]

InChI:InChI=1/4C2H4O2.Si/c4*1-2(3)4;/h4*1H3,(H,3,4);/q;;;;+4/p-4

Upstream product

• 109-60-4 1-Propyl acetate 
• 110-19-0 2-methylpropyl acetate 
• 127-09-3 sodium acetate 
• 108-24-7 acetic anhydride 
• 64-19-7 acetic acid 
• 141-78-6 ethyl acetate 
• 540-88-5 acetic acid tert-butyl ester 
• 75-36-5 acetyl chloride 
• 75-65-0 tert-butyl alcohol 
• 10026-04-7 tetrachlorosilane 
• 123-86-4 acetic acid butyl ester 
• 78-10-4 tetraethoxy orthosilicate 

Downstream Products

• 703-80-0 3-acetylindole 
• 1072-83-9 2-Acetylpyrrole 
• 123-54-6 acetylacetone 
• 140-10-3 (E)-3-phenylacrylic acid 
• 3148-73-0 Diacetylhydrazin 
• 103-84-4 Acetanilid 
• 99-91-2 para-chloroacetophenone 
• 17947-85-2 acetoxy-tri-tert-butoxy-silane 
• 13170-23-5 di-t-butoxydiacetoxysilane 
• 13170-22-4 triacetoxy-tert-butoxy-silane 
• 1174-72-7 tetraphenoxysilane 
• 681-84-5 tetramethylorthosilicate 
• 994-79-6 tetrabutylsilane 
• 628-67-1 butane-1,4-diol diacetate 

Relevant articles and documents

Method for Producing Acyloxysilanes, Acyloxysilanes Obtained Thereby, and Use of Same

An object of the invention is to provide a method for efficiently producing an acyloxysilane which is useful as a functional chemical, an acyloxysilane obtained thereby, and the use thereof. The present invention provides: a method for producing an acyloxysilane, including a reaction step of reacting an alkoxysilane with a carboxylic anhydride in the presence of a catalyst, wherein the alkoxysilane is a specified alkoxysilane represented by General Formula (I), the carboxylic anhydride is a specified carboxylic acid represented by General Formula (IIA) or (IIB), the catalyst is an acid catalyst, and an acyloxysilane obtained in the reaction step is a specified acyloxysilane represented by General Formula (IIIA) or (IIIB); and the use of the acyloxysilane as a surface treatment agent or the like.

Reaction of Acetoxysilanes with Hydroxy Compounds

Tetraacetoxysilane reacts with hexanol, cyclohexanol, and phenol to give products of complete or partial replacement of the acetoxy groups. The rate of hydrolysis of the SiOR group in alkoxy(phenoxy)-silanes and alkoxy(phenoxy)acetoxysilanes in homogeneous (THF) and heterogeneous media (on cellulose surface) increases in the series c=Si-OC6H5 > =Si-OC6H13 > =Si-OC6H11.

Process for the preparation of di-tert.butoxydiacetoxysilane

Di-tert.butoxydiacetoxysilane is prepared by reacting tetraacetoxysilane with tert.butanol at a reaction temperature of up to 60° C., and the resulting di-tert.butoxydiacetoxysilane is isolated.

Structural investiagations of zirconium tetra-acetate and the group IVB tetra-acetates

Solid-state i.r., Raman 1H and 13C NMR spectra are reported for solid zirconium tetra-acetate and for the group IVB tetra-acetates (M=Si, Ge, Sn or Pb).The types of acetate co-ordination have been identified: Zr(OAc)4 has a polymeric eight-co-ordinate structure and contains both bridging and bidentate acetate groups; Si(OAc)4 and Ge(OAc)4 contain only unidentate acetates to give four-co-ordinate structures while Sn(OAc)4 and Pb(OAc)4 contain only bidentate acetate groups to give eight-co-ordinate monomeric structures.The solid-state Raman 13C NMR spectra are reported for the first time.

Mixed Ligand Complexes of Si(IV) with 2-Methylpentane-2,4-diol and Schiff Bases

Synthesis and characterization of mixed ligand complexes of silicon of the type Si(OAc)(C6H12O2)(SB), Si(C6H12O2)(SB)2, Si(C6H12O2)(S'B') and SI(C6H12O2)(S''B'') with 2-methylpentane-2,4-diol and monobasic bidentate (SB(-)), bibasic tri-(S'B'(2-)) and tetradentate (S''B''(2-)) schiff base anions are reported.All the complexes are monomeric, yellow in colour with sharp melting points.The derivatives have been characterized on the basis of elemental analyses, conductivity measurements and IR as well as PMR spectral data.