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SILICON TETRAACETATE

Basic information Introduction Safety Related Supplier
SILICON TETRAACETATE Basic information
SILICON TETRAACETATE Chemical Properties
  • 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.  0-6°C
  • solubility Soluble in acetone and benzene.
  • form crystal
  • color white
  • Water Solubility soluble acetone, benzene [MER06]
  • Hydrolytic Sensitivity7: reacts slowly with moisture/water
  • Sensitive Moisture Sensitive
  • Merck 14,8498
  • BRN 994868
  • CAS DataBase Reference562-90-3(CAS DataBase Reference)
  • EPA Substance Registry SystemSilicon tetraacetate (562-90-3)
Safety Information
  • Hazard Codes C
  • Risk Statements 34
  • Safety Statements 26-36/37/39-45
  • RIDADR UN 3261 8/PG 2
  • WGK Germany 3
  • 10
  • TSCA Yes
  • HazardClass 8
  • PackingGroup II
  • HS Code 29159000
MSDS
SILICON TETRAACETATE Usage And Synthesis
  • IntroductionTetraacetoxysilane is a clear to yellowish liquid with acrid odor of acetic acid (vinegar). It hydrolyzes in the presence of moisture (acetic acid is released) to form silanols, which can react with themselves to pro-duce siloxanes or bind to inorganic substrates.
  • Chemical PropertiesOff-white crystalline solid
  • Purification MethodsIt 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.]
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