SILICON TETRAACETATE
- CAS NO.:562-90-3
- Empirical Formula: C8H12O8Si
- Molecular Weight: 264.26
- MDL number: MFCD00026184
- EINECS: 209-239-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-23 13:52:06
What is SILICON TETRAACETATE?
Chemical properties
Off-white crystalline solid
The Uses of SILICON TETRAACETATE
Silicon tetraacetate is used in the preparation of silicon dioxide thin films by a direct photochemical vapor deposition method. It serves as a precursor to prepare silicon complexes with monofunctional bidentate Schiff bases. It is also used as an alternative to silicon hydride and alkoxide for low-temperature silicon dioxide production. Further, it reacts with ethanol in the absence of water to get silica gel and ethyl acetate. In addition, it is employed as a sol-gel precursor.
General Description
Silicon tetraacetate is an alternative to silicon hydride and alkoxide for low-temperature SiO2 production. Silicon tetraacetate reacts with ethanol in absence of water to form silica gel and ethyl acetate. Silicon tetraacetate is reported as a sol-gel precursor.
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.]
Properties of SILICON TETRAACETATE
Melting point: | 111-115 °C(lit.) |
Boiling point: | 148 °C5 mm Hg(lit.) |
Density | 1,18 g/cm3 |
vapor density | >1 (vs air) |
Flash point: | >110°C |
storage temp. | -20°C |
solubility | Soluble in acetone and benzene. |
form | crystal |
color | white |
Water Solubility | soluble acetone, benzene [MER06] |
Sensitive | Moisture Sensitive |
Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
Merck | 14,8498 |
BRN | 994868 |
CAS DataBase Reference | 562-90-3(CAS DataBase Reference) |
EPA Substance Registry System | Silicon tetraacetate (562-90-3) |
Safety information for SILICON TETRAACETATE
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 |
GHS Hazard Statements |
H314:Skin corrosion/irritation |
Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P363:Wash contaminated clothing before reuse. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for SILICON TETRAACETATE
New Products
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