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87682 Sigma-Aldrich

Tetramethyl orthosilicate

purum, ≥98.0% (GC)

Synonym: Tetramethoxysilane

  • CAS Number 681-84-5

  • Linear Formula Si(OCH3)4

  • Molecular Weight 152.22

  •  Beilstein/REAXYS Number 1699658

  •  EC Number 211-656-4

  •  MDL number MFCD00008341

  •  PubChem Substance ID 329769595

  •  NACRES NA.23

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Properties

Related Categories Chemical Synthesis, Organometallic Reagents, Organosilicon, Silicates
Quality Level   200
vapor density   5.25 (vs air)
vapor pressure   3.35 psi ( 20 °C)
grade   purum
assay   ≥98.0% (GC)
form   liquid
refractive index   n20/D 1.368 (lit.)
  n20/D 1.368
bp   121-122 °C (lit.)
mp   −4 °C (lit.)
density   1.023 g/mL at 25 °C (lit.)
SMILES string   CO[Si](OC)(OC)OC
InChI   1S/C4H12O4Si/c1-5-9(6-2,7-3)8-4/h1-4H3
InChI key   LFQCEHFDDXELDD-UHFFFAOYSA-N

Description

Application

Used in the sol-gel synthesis of chromium-doped silicates and in the formation of hexagonal mesoporous silica layers.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN 2606 3(6.1) / PGI
WGK Germany 
WGK 3
RTECS 
VV9800000
Flash Point(F) 
78.8 °F - closed cup
Flash Point(C) 
26 °C - closed cup
Protocols & Articles
Peer-Reviewed Papers
15

References

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